| Country | Carrier | Latest change
21-04-2008 (Q05 after update info indicates that the entry is updated according to the latest version of the questionnaire) |
| Argentina | Telecom Argentina | 04 MAR 2005 |
| Telefonica de Argentina | 24 JAN 2008 | |
| Australia | AAPT |
04 JUL 2007
 |
| Optus | 15 MAY 2007  |
|
| Reach (Telstra) | 09 MAR 2007  |
|
| Austria | Telekom Austria | 14 MAY 2004 |
| Bahrain | Batelco | 21 OCT 2004 |
| Belgium | Belgacom | 04 JAN 2005 |
| Brazil | Embratel | 24 SEP 2004 |
| Telefonica | 12 AUG 2005 | |
| Canada | Teleglobe | 24 JAN 2008 |
| Chile | Entel Chile | 13 NOV 2001 |
| Telefonica Mundo | 21 MAY 2004 | |
| China | China Netcom | 24 SEP 2004 |
| China Telecom | 04 MAR 2004 | |
| Colombia | Orbitel | 06 MAY 2005 |
| Costa Rica | I.C.E. | 14 FEB 2003 |
| Cyprus | CYTA | 11 OCT 2005 |
| Croatia | Croatian Telecom | 13 JUL 2005 |
| Czech Republic | Telefónica O2 Czech Republic |
16
AUG 2007  |
| Denmark | TDC | 11 OCT 2007 |
| Dominican Republic | Codetel | 23 APR 2007  |
| Estonia | Elion | 12 OCT 2005 |
| Finland | Elisa | 15 MAY 2007  |
| TeliaSonera Finland | 08 JAN 2007 |
|
| France | France Telecom | 08 JAN 2007 |
| Germany | Arcor | 20 DEC 2004 |
| Deutsche Telekom |
16 AUG 2007
|
|
| Greece | OTE Globe | 17 NOV 2005 |
| Hong Kong | Reach HK | 22 MAR 2005 |
| Hungary | MATÁV | 25 JAN 2005 |
| Iceland | Iceland Telecom | 15 JUN 2006 |
| Indonesia | PT Indosat | 26 MAR 2008 |
| Ireland | eircom | 20 SEP 2007 |
| Israel | Bezeq International | 02 OCT 2006 |
| Italy | Telecom Italia | 29 MAY 2006 |
| Japan | Softbank Telecom (ex C&W IDC) |
14 NOV 2007  |
| Softbank Telecom (ex Japan Telecom) | 05 MAR 2007 |
|
| KDDI |
14 NOV 2007
|
|
| NTT Communications | 14 NOV 2007  |
|
| Korea | Dacom | 10 AUG 2006 |
| Korea Telecom | 28 JAN 2008 | |
| Onse Telecom | 15 NOV 2000 | |
| Latvia | Lattelecom | 14 APR 2008 |
| Lithuania | TEO LT, AB | 15 MAY 2007 |
| Luxembourg | PTT | 10 APR 2002 |
| Malaysia | Telekom Malaysia | 08 JAN 2007 |
| Monaco | Monaco Telecom | 15 FEB 1999 |
| Netherlands | KPN | 18 JAN 2008 |
| New Zealand | Telecom NZ | 22 JAN 2008 |
| TelstraClear | 18 JAN 2008 | |
| Norway | Telenor | 20 SEP 2007 |
| Panamá | Cable&Wireless Panamá | 14 JUN 2005 |
| Peru | Telefonica of Peru | 29 JAN 2008 |
| Philippines | PLDT | 21 APR 2008 |
| Poland | Polish Telecom | 11 JUL 2006 |
| Portugal | Marconi | 06 MAY 2005 |
| Puerto Rico | TLD of Puerto Rico | 14 NOV 2007 |
| Russia | MTT | 09 FEB 2007  |
| Rostelecom | 20 MAR 2002 | |
| Saudi Arabia | Saudi Telecom Company STC | 25 JUL 2005 |
| Singapore | Singapore Telecommunications Ltd. | 13 NOV 2007 |
| Slovakia | Slovak Telekom, a.s. | 20 MAR 2006 |
| Slovenia | Telekom Slovenije | 07 DEC 2005 |
| South Africa | Telkom SA | 16 AUG 2007 |
| Spain | Telefónica | 23 APR 2007 |
| Sweden | Tele2 | 30 AUG 2001 |
| Telia | 18 JAN 2008 | |
| Switzerland | Swisscom | 10 APR 2007 |
| Taiwan | Chunghwa Telecom | 17 NOV 2005 |
| Thailand | CAT Telecom | 17 NOV 2005 |
| UK | Cable&Wireless | 29 MAY 2006 |
| BT | 23 NOV 2007 |
|
| United Arab Emirates | Etisalat | 05 SEP 2005 |
| Uruguay | Antel |
16 NOV 2007 |
| USA | AT&T | 16
AUG 2007 |
| MCI | 07 MAR 2006 | |
| Sprint | 10 APR 2007 |
|
| Vietnam | VNPT | 13 OCT 2004 |
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