Exhibit 99.(a)(1)(I)

FORM OF COMMUNICATION TO ELIGIBLE EMPLOYEES REJECTING THE

NOTICE OF WITHDRAWAL UNDER THE OPTION EXCHANGE PROGRAM

Date:

To: [•]

From: Internap Network Services Corporation

Re: Rejected Notice of Withdrawal Under Option Exchange Program

Unfortunately, your Notice of Withdrawal regarding our Option Exchange Program was either inaccurate, incomplete or improperly signed and was not accepted for the following reason(s): [•]. If you wish to withdraw your previously delivered Election Form, please complete and sign the attached Notice of Withdrawal and deliver it to Internap so that it is received before 11:59 p.m., U.S. Eastern Time, on September 26, 2006 (or such later date as may apply if this exchange offer is extended), by one of the following means:

Via Mail or Courier

Internap Network Services Corporation

250 Williams Street, Suite E-100

Atlanta, Georgia 30303

Attention: James Salmond

Phone: (404) 302-9780

Via Facsimile

Internap Network Services Corporation

Attention: James Salmond

Fax No. (404) 302-9913

By Hand or Interoffice Mail

Human Resources Department

Attention: James Salmond

If we do not receive a properly completed and signed Notice of Withdrawal from you before the deadline for the Option Exchange Program, all eligible options currently tendered by you will be cancelled for exchange.

You should direct questions about the exchange offer or requests for assistance to Internap Network Services Corporation, 250 Williams Street, Suite E-100, Atlanta, Georgia 30303, Attention: James Salmond, Phone: (404) 302-9780, Email: optionexchange@internap.com. You should direct questions for additional copies of the exchange offer, the Election Form or other documents relating to this exchange offer to Internap Network Services Corporation, 250 Williams Street, Suite E-100, Atlanta, Georgia 30303, Attention: James Salmond, Phone: (404) 302-9780, Email: optionexchange@internap.com.