SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                  SCHEDULE 13G
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b) (c), AND (d) AND AMENDMENTS THERETO FILED
                            PURSUANT TO RULE 13d-2(b)
                               (AMENDMENT NO. 4)*

                      InterNAP Network Services Corporation
--------------------------------------------------------------------------------
                                (Name of Issuer)

                    Common Stock, Par Value $0.001 per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    45885A102
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 2001
--------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

      Check the appropriate box to designate the rule pursuant to which
this Schedule is filed:
                               |_| Rule 13d-1 (b)
                               |_| Rule 13d-1 (c)
                               |X| Rule 13d-1 (d)

----------
*     The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.

      The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).



CUSIP No. 45885A102                    13G                    Page 2 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak Investment Partners VIII, Limited Partnership
    06-1522124
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       9,318,965 Shares of Common Stock
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          Not applicable
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             9,318,965 Shares of Common Stock
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       Not applicable
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    9,318,965 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    6.16%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    PN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 3 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak Associates VIII, LLC
    06-1523705
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          9,318,965 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       9,318,965 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    9,318,965 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    6.16%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    OO-LLC
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 4 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak VIII Affiliates Fund, Limited Partnership
    06-1528836
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       219,225 Shares of Common Stock
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          Not applicable
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             219,225 Shares of Common Stock
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       Not applicable
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    219,225 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    0.14%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    PN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 5 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak VIII Affiliates, LLC
    06-1531129
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          219,225 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       219,225 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    219,225 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    0.14%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    OO-LLC
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 6 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak Investment Partners X, Limited Partnership
    06-1601019
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       14,586,478 Shares of Common Stock
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          Not applicable
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             14,586,478 Shares of Common Stock
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       Not applicable
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    14,586,478 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    8.80%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    PN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 7 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak Associates X, LLC
    06-1630661
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          14,586,478 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       14,586,478 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    14,586,478 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    8.80%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    OO-LLC
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 8 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak X Affiliates Fund, Limited Partnership
    06-122220
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       234,165 Shares of Common Stock
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          Not applicable
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             234,165 Shares of Common Stock
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       Not applicable
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    234,165 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    0.15%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    PN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                    Page 9 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak X Affiliates, LLC
    06-1630662
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          234,165 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       234,165 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    234,165 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    0.15%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    OO-LLC
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 10 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Oak Management Corporation
    06-0990851
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          24,358,833 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    14.66%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    CO
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 11 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Bandel L. Carano
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          24,358,833 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    14.66%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    IN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 12 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Gerald R. Gallagher
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          9,538,190 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       9,538,190 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    9,538,190 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    6.30%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    IN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 13 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Edward F. Glassmeyer
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          24,358,833 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    14.66%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    IN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 14 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Fredric W. Harman
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       103,052
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          24,358,833 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             103,052
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    24,461,885 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    14.73%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    IN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 15 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    Ann H. Lamont
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          24,358,833 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    24,358,833 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    14.66%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    IN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 16 of 27 pages
--------------------------------------------------------------------------------
1   NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

    David B. Walrod
--------------------------------------------------------------------------------
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
--------------------------------------------------------------------------------
3   SEC USE ONLY


--------------------------------------------------------------------------------
4   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States
--------------------------------------------------------------------------------
                  5    SOLE VOTING POWER

                       Not applicable
                  --------------------------------------------------------------
  NUMBER OF       6    SHARED VOTING POWER
    SHARES
 BENEFICIALLY          14,820,643 Shares of Common Stock
   OWNED BY       --------------------------------------------------------------
     EACH         7    SOLE DISPOSITIVE POWER
  REPORTING
    PERSON             Not applicable
     WITH         --------------------------------------------------------------
                  8    SHARED DISPOSITIVE POWER

                       14,820,643 Shares of Common Stock
--------------------------------------------------------------------------------
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    14,820,643 Shares of Common Stock
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                            |_|
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

    8.92%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON*

    IN
--------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT


CUSIP No. 45885A102                    13G                   Page 17 of 27 pages


Schedule 13G

                               Amendment No. _4_*
                          Common Stock Par Value $0.001
                               CUSIP No. 45885A102

ITEM 1(a)   NAME OF ISSUER:

            InterNAP Network Services Corporation

ITEM 1(b)   ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

            601 Union Street, Suite 1000
            Seattle, Washington 98101

ITEM 2(a)   NAME OF PERSON FILING:

            Oak Investment Partners VIII, Limited Partnership
            Oak Associates VIII, LLC
            Oak VIII Affiliates Fund, Limited Partnership
            Oak VIII Affiliates, LLC
            Oak Investment Partners X, Limited Partnership
            Oak Associates X, LLC
            Oak X Affiliates Fund, Limited Partnership
            Oak X Affiliates, LLC
            Oak Management Corporation
            Bandel L. Carano
            Gerald R. Gallagher
            Edward F. Glassmeyer
            Fredric W. Harman
            Ann H. Lamont
            David B. Walrod

ITEM 2(b)   ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

            c/o Oak Management Corporation
            One Gorham Island
            Westport, Connecticut  06880

ITEM 2(c)   CITIZENSHIP:

            Please refer to Item 4 on each cover sheet for each filing person.

ITEM 2(d)   TITLE OF CLASS OF SECURITIES:

            Common stock, par value $0.001 per share.

ITEM 2(e)   CUSIP NUMBER: 45885A102

ITEM 3      NOT APPLICABLE


CUSIP No. 45885A102                    13G                   Page 18 of 27 pages


ITEM 4      OWNERSHIP.

            The approximate percentages of shares of common stock reported as
beneficially owned by the Reporting Persons is based upon 151,250,592 shares of
common stock outstanding as of November 9, 2001, as reported in the Issuer's
Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2001,
plus shares issuable upon conversion or exercise of options and warrants to
acquire common stock and upon the conversion of Series A preferred stock as
described in the following two paragraphs.

            Amounts shown as beneficially owned by each of Oak Investment
Partners VIII, Limited Partnership ("Oak Investment VIII"), Oak Associates VIII,
LLC, Oak Management Corporation ("Oak Management"), Bandel L. Carano, Gerald R.
Gallagher, Edward F. Glassmeyer, Fredric W. Harman and Ann H. Lamont include
currently exercisable options to purchase 39,240 shares of common stock which
may be deemed to be held by Fredric W. Harman on behalf of Oak Investment VIII.
Amounts shown as beneficially owned by each of Oak VIII Affiliates Fund, Limited
Partnership ("Oak Affiliates VIII") and Oak VIII Affiliates, LLC, Oak
Management, Bandel L. Carano, Gerald R. Gallagher, Edward F. Glassmeyer, Fredric
W. Harman and Ann H. Lamont include currently exercisable options to purchase
760 shares of common stock which may be deemed to be held by Fredric W. Harman
on behalf of Oak Affiliates VIII.

            Amounts shown as beneficially owned by each of Oak Investment
Partners X, Limited Partnership ("Oak Investment X") and Oak Associates X, LLC,
Oak Management, Bandel L. Carano, Edward F. Glassmeyer, Fredric W. Harman, Ann
H. Lamont and David B. Walrod include (i) currently exercisable warrants to
purchase 2,917,295 shares of common stock held by Oak Investment X and (ii) the
11,669,182 shares of common stock into which the shares of Series A preferred
stock held by Oak Investment X may be converted. Amounts shown as beneficially
owned by each of Oak X Affiliates Fund, Limited Partnership ("Oak Affiliates
X"), Oak X Affiliates, LLC, Oak Management, Bandel L. Carano, Edward F.
Glassmeyer, Fredric W. Harman, Ann H. Lamont and David B. Walrod include (i)
currently exercisable warrants to purchase 46,833 shares of common stock held by
Oak Affiliates X and (ii) the 187,332 shares of common stock into which the
shares of Series A preferred stock held by Oak Affiliates X may be converted.

            Amounts shown as beneficially owned by Mr. Harman include 94,853
shares of common stock held by Mr. Harman and an aggregate of 8,199 shares of
common stock held in trust for the benefit of Mr. Harman's three minor children.
Mr. Harman disclaims beneficial ownership of the shares held in trust for his
three minor children.

            Please see Items 5, 6, 7, 8, 9 and 11 for each cover sheet for each
filing entity.

ITEM 5      OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

            If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial owner of more
than five percent of the class of securities, check the following: |_|

ITEM 6      OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

            Not applicable

ITEM 7      IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
            THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.


CUSIP No. 45885A102                    13G                   Page 19 of 27 pages


            Not applicable

ITEM 8     IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

            Not applicable

ITEM 9     NOTICE OF DISSOLUTION OF GROUP.

            Not applicable

ITEM 10    CERTIFICATIONS.

            Not applicable


CUSIP No. 45885A102                    13G                   Page 20 of 27 pages


      After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

SIGNATURE:

      Dated: February 14, 2002

      Entities:

Oak Investment Partners VIII, Limited Partnership
Oak Associates VIII, LLC
Oak VIII Affiliates Fund, Limited Partnership
Oak VIII Affiliates, LLC
Oak Investment Partners X, Limited Partnership
Oak Associates X, LLC
Oak X Affiliates Fund, Limited Partnership
Oak X Affiliates, LLC
Oak Management Corporation


                                       By: /s/ Edward F. Glassmeyer
                                           -------------------------------------
                                               Edward F. Glassmeyer, as
                                               General Partner or
                                               Managing Member or as
                                               Attorney-in-fact for the
                                               above-listed entities

Individuals:

Bandel L. Carano
Gerald R. Gallagher
Edward F. Glassmeyer
Fredric W. Harman
Ann H. Lamont
David B. Walrod


                                       By: /s/ Edward F. Glassmeyer
                                           -------------------------------------
                                               Edward F. Glassmeyer,
                                               Individually and as
                                               Attorney-in-fact for the
                                               above-listed individuals


CUSIP No. 45885A102                    13G                   Page 21 of 27 pages


                                INDEX TO EXHIBITS

                                                                            Page
                                                                            ----

EXHIBIT A      Agreement of Reporting Persons                                 22

EXHIBIT B      Power of Attorney                                              23