Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  KAPLAN PHILIP N
 2. Date of Event Requiring Statement (Month/Day/Year)
02/20/2007		 3. Issuer Name and Ticker or Trading Symbol
INTERNAP NETWORK SERVICES CORP [INAP]
(Last)
(First)
(Middle)
555 ANTON BLVD., SUITE 400		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Strategy Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

COSTA MESA, CA 92626		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 483,546
I
By Family Trust
Common Stock 5,952
I
By Spouse

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Options (right to buy) 12/02/2005(1) 12/02/2009 Common Stock 25,660 $ 4.05 D  
Employee Stock Options (right to buy) 12/16/2006(2) 12/16/2010 Common Stock 26,943 $ 10.52 D  
Employee Stock Options (right to buy) 07/13/2007(3) 07/13/2011 Common Stock 76,980 $ 17.3 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
KAPLAN PHILIP N
555 ANTON BLVD., SUITE 400
COSTA MESA, CA 92626		       Chief Strategy Officer  

Signatures

/s/ Art Sida, Attorney-in-Fact 03/01/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) One-third vested on December 2, 2005 and 1/12 vest each quarter thereafter until fully vested.
(2) One-fourth vested on December 16, 2006 and 1/16 vest at the end of each quarter thereafter.
(3) One-fourth vest on July 13, 2007 and 1/16 vest at the end of each quarter thereafter.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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