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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                  SCHEDULE TO/A
                                (AMENDMENT NO. 4)
                                  (RULE 13e-4)
        TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR SECTION 13(e)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

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                          INFONET SERVICES CORPORATION
         (NAME OF SUBJECT COMPANY (ISSUER) AND FILING PERSON (OFFEROR))

      OPTIONS TO PURCHASE CLASS B COMMON STOCK, PAR VALUE $0.01 PER SHARE,
              WITH AN EXERCISE PRICE OF $13.00 OR HIGHER PER SHARE
                         (TITLE OF CLASS OF SECURITIES)

                                   45666T 10 6
                      (CUSIP NUMBER OF CLASS OF SECURITIES)

                                PAUL A. GALLEBERG
              SENIOR VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                          INFONET SERVICES CORPORATION
                             2160 EAST GRAND AVENUE
                          EL SEGUNDO, CALIFORNIA 90245
                                 (310) 335-2600
       (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO RECEIVE
           NOTICES AND COMMUNICATIONS ON BEHALF OF THE FILING PERSON)

                                    COPY TO:
                               WILLIAM J. CERNIUS
                                LATHAM & WATKINS
                        650 TOWN CENTER DRIVE, SUITE 2000
                          COSTA MESA, CALIFORNIA 92626
                                 (714) 540-1235

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                            CALCULATION OF FILING FEE

       TRANSACTION VALUATION*                         AMOUNT OF FILING FEE
       ----------------------                         --------------------
            $5,588,122                                     $1,117.62**


*    Calculated solely for purposes of determining the filing fee. This amount
     assumes that options to purchase 6,403,150 shares of Class B common stock
     of Infonet Services Corporation having an aggregate value of $5,588,122 as
     of January 2, 2002 will be exchanged and/or cancelled pursuant to this
     offer. The aggregate value of such options was calculated based on the
     Black-Scholes option pricing model. The amount of the filing fee,
     calculated in accordance with Rule 0-11(b)(2) of the Securities Exchange
     Act of 1934, as amended, equals 1/50th of one percent of the value of the
     transaction.

**   Previously paid.

[ ]  Check box if any part of the fee is offset as provided by Rule 0-11(a)(2)
     and identify the filing with which the offsetting fee was previously paid.
     Identify the previous filing by registration statement number, or the Form
     or Schedule and the date of its filing.

          Amount Previously Paid: Not applicable.  Filing party: Not applicable.
          Form or Registration No.: Not applicable.  Date Filed: Not applicable.

[ ]  Check the box if the filing relates solely to preliminary communications
     made before the commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the
statement relates:

     [ ]  third-party tender offer subject to Rule 14d-1

     [X]  issuer tender offer subject to Rule 13e-4

     [ ]  going private transaction subject to Rule 13e-3

     [ ]  amendment to Schedule 13D under Rule 13d-2

Check the following box if the filing is a final amendment reporting the results
of the tender offer [ ]

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     This Amendment No. 4 and final amendment to the Tender Offer Statement on
Schedule TO (the "Schedule TO") filed with the Securities and Exchange
Commission on January 7, 2002, as amended, relating to an offer by Infonet
Services Corporation, a Delaware corporation, to exchange all options to
purchase shares of Infonet Services Corporation's Class B common stock ("Class B
common stock"), par value $0.01 per share ("option shares"), with an exercise
price of $13.00 or higher per share (the "options") outstanding under eligible
option plans and held by eligible employees, for new options (the "new options")
to purchase shares of Class B common stock to be granted under eligible option
plans, upon the terms and subject to the conditions set forth in the Offer to
Exchange Certain Outstanding Options dated January 7, 2002, as amended and
restated on January 17, 2002 (the "offer to exchange"), and the related Election
Concerning Exchange of Stock Options form (the "election form" and, together
with the offer to exchange, as they may be amended or supplemented from time to
time, the "offer"), attached hereto as Exhibit (a)(1)(i) and Exhibit (a)(1)(v).
The number of shares of Class B common stock subject to the new options will be
equal to the number of shares of Class B common stock subject to the options
that are accepted for exchange and cancelled. Each option holder will be granted
new options to purchase that number of shares of Class B Common Stock equal to
the number set forth on the table in the option holder's election form.

     This Amendment No. 4 to the Tender Offer Statement on Schedule TO is
intended to satisfy the reporting requirements of Section 13(e) of the
Securities Exchange Act of 1934, as amended.

     The information in the offer, a copy of which is filed with this Schedule
TO as Exhibits (a)(1)(i) and (a)(1)(v) hereto, is incorporated herein by
reference in answer to items 1 through 11 in this Tender Offer Statement on
Schedule TO. The following items are inapplicable: Item 7 (the information
required by Item 1007(d) of Regulation M-A); Item 9 (the information required by
Item 1009(a) of Regulation M-A); Item 10 (the information required by Item
1010(b) of Regulation M-A); and Item 13.

Section 5 of this Schedule TO is hereby amended and updated to provide the
following:

5.   Acceptance of Options for Exchange and Issuance of New Options.

     The offer to exchange expired at 5:00 p.m. Pacific Time, on Thursday,
February 14, 2002. Pursuant to the offer we accepted for exchange options to
purchase 6,351,250 shares of our Class B common stock that were eligible to be
tendered in the offer. Upon the terms and subject to the conditions of the
offer, we will grant options to purchase an aggregate of 6,351,250 shares of our
Class B common stock in exchange for such tendered options. We will promptly
send each option holder whose options have been accepted for exchange a letter,
substantially in the form of Exhibit (a)(1)(ix) as previously filed, indicating
the number of shares of common stock subject to such holder's options that have
been accepted for exchange and the corresponding number of shares of common
stock that will be subject to the options that will be granted to such holders.



                                    SIGNATURE

     After due 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.

Dated:  February 15, 2002            INFONET SERVICES CORPORATION


                                     By:  /s/ Paul A. Galleberg
                                          --------------------------------------
                                          Name:   Paul A. Galleberg
                                          Title:  Senior Vice President,
                                                  General Counsel and Secretary