                                        UNITED STATES
                              SECURITIES AND EXCHANGE COMMISSION
                                    WASHINGTON, D.C. 20549



                                           FORM 8-K



                                        CURRENT REPORT



                            Pursuant to Section 13 or 15(d) of the
                               Securities Exchange Act of 1934


Date of Report (Date of earliest event reported)                  October 218, 2001 
                                                  -----------------------------------------------

                                    ILLUMINET Illuminet HoldingsHOLDINGS, IncINC. 
------------------------------------------------------------------------------------------------- 
                     (Exact name of registrant as specified in its charter) 


                DELAWARE                          0-27555                     36-4042177 
----------------------------------------- ----------------------- ------------------------------- 
      (State or other jurisdiction              (Commission                 (IRS Employer 
           of incorporation)                    File Number)             Identification No.) 


4501 Intelco Loop, S.E., Lacey, Washington                                    98503 
------------------------------------------------------------------------------------------------- 
            (Address of principal executive offices)                         (Zip Code) 



Registrant's telephone number, including area code                   (360) 493-6000 
                                                       ------------------------------------------ 



                                         Not applicable 
------------------------------------------------------------------------------------------------- 
                 (Former name or former address, if changed since last report) Item 5. Other Events. On September 28, 2001, Illuminet Holdings, Inc., a Delaware corporation ("Illuminet"), acquired all of the outstanding stock of BellSouth International Wireless Services, Inc., a Delaware corporation ("BSI-WS") and wholly-owned subsidiary of BellSouth Corporation, a Georgia corporation. A copy of the press release announcing the completion of the previously announced acquisition of BSI-WS' stock is attached as Exhibit 99.1 hereto and incorporated herein by reference. Item 7. Financial Statements and Exhibits. (c) EXHIBIT. The following exhibit is filed herewith: 99.1 Press Release dated October 2, 2001 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Illuminet Holdings, Inc. ------------------------------------------- (Registrant) DATE: October 2, 2001 By: /s/ Daniel E. Weiss ------------------------ ------------------------------------------- Daniel E. Weiss, Vice President - Finance and Chief Financial Officer


Item 7.    Financial Statements and Exhibits.

        (c)    EXHIBITS.  The following exhibits are filed herewith:

99.1    Press Release dated October 18, 2001.

Item 9.  Regulation FD Disclosure.

     On October 18, 2001, the registrant issued a press release announcing
financial results for its third quarter ended September 30, 2001. A copy of the
press release is attached as Exhibit 99.1 hereto and incorporated herein by
reference.


                                    SIGNATURE


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Date:  October 18, 2001                   ILLUMINET HOLDINGS, INC.


                                          By: /s/ Daniel E. Weiss
                                              ----------------------------------
                                             Daniel E. Weiss, Vice President--
                                             Finance and Chief Financial Officer

Filing Compare · ILLUMINET HOLDINGS INC