ITU Operational Bulletin
Dates of publication of the next Operational Bulletins
| No. | Publication date | Including information received by |
|---|---|---|
| 1316 | 15.V.2025 | 6.V.2025 |
General information
Lists annexed to the ITU Operational Bulletin
A. The following Lists have been published by TSB or BR as Annexes to the ITU Operational Bulletin:
| OB No. | |
|---|---|
| 1199 | List of International Signalling Point Codes (ISPC) (according to ITU-T Q.708 (1999-03)) (position on 2020-06-30 22:00:00 UTC) |
| 1162 | Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions (according to ITU-T E.212 (2016-09)) (position on 2018-12-15 00:00:00 UTC) |
| 1161 | List of Issuer Identifier Numbers for the International Telecommunication Charge Card (according to ITU-T E.118 (2006-05)) (position on 2018-12-01) |
| 1154 | Status of Radiocommunications between Amateur Stations of different Countries (in accordance with optional provision No. 25.1 of the Radio Regulations) and Form of Call Signs assigned by each Administration to its Amateur and Experimental Stations (position on 2018-08-15) |
| 1125 | List of terrestrial trunk radio mobile country codes (according to ITU-T E.218 (2004-5)) (position on 2017-06-01 00:00:00 UTC) |
| 1125 | List of Signalling Area/Network Codes (SANC) (according to ITU-T Q.708 (1999-03)) (position on 2017-06-01 00:00:00 UTC) |
| 1117 | List of mobile country or geographical area codes (according to ITU-T E.212 (2016-09)) (position on 2017-02-01 00:00:00 UTC) |
| 1114 | List of Recommendation ITU-T E.164 Assigned Country Codes (according to ITU-T E.164 (2010-11)) (position on 2016-12-15) |
| 1096 | Legal time 2016 |
| 1073 | Legal time 2015 |
| 1060 | List of ITU Carrier Codes (according to ITU-T M.1400 (2013-03)) (position on 2014-09-15 00:00:00 UTC) |
| 1049 | Legal time 2014 |
| 1027 | Legal time 2013 |
| 1015 | List of Access codes/numbers for mobile networks (according to ITU-T E.164 (2010-11)) (position on 2012-11-01 00:00:00 UTC) |
| 1002 | List of Country or Geographical Area Codes for non standard facilities in telematic services (according to ITU-T T.35 (2000-02)) (position on 2012-04-12 00:00:00 UTC) |
| 1001 | List of the national authorities designated to assign ITU-T Recommendation T.35 terminal provider codes (according to ITU-T T.35 (2000-02)) (position on 2012-04-15 00:00:00 UTC) |
| 1000 | Service Restrictions (Recapitulatory list of service restrictions in force relating to telecommunications operation) (position on 2012-03-15 00:00:00 UTC) |
| 999 | Legal time 2012 |
| 994 | Dialling Procedures (International prefix, national (trunk) prefix and national (significant) number) (according to ITU-T E.164 (2010-11)) (position on 2011-12-15 00:00:00 UTC) |
| 991 | Call-Back and alternative calling procedures (position on 2011-11-01 00:00:00 UTC) |
| 980 | List of Telegram Destination Indicators (according to ITU-T F.32 (1995-10)) (position on 2011-05-15 00:00:00 UTC) |
| 978 | List of Telex Destination Codes (TDC) and Telex Network Identification Codes (TNIC) (position on 2011-04-15 00:00:00 UTC) |
| 977 | List of Data Network Identification Codes (DNIC) (according to ITU-T X.121 (2000/10)) (position on 2011-01-01 00:00:00 UTC) |
| 976 | List of Data Country or Geographical Area Codes (according to ITU-T X.121 (2000/10)) (position on 2011-03-15 00:00:00 UTC) |
| 974 | List of Names of Administration Management Domains (ADMD) (according to ITU-T F.400) (position on 2011-02-15 00:00:00 UTC) |
| 955 | Various tones used in national networks (according to ITU-T E.180 (1998-3)) (position on 2010-05-01 00:00:00 UTC) |
| 669 | Five-letter Code Groups for the use of the International Public Telegram Service (according to ITU-T F.1 (1998-3)) |
B. The following Lists are available online from the ITU-T website:
Approval of ITU-T Recommendations
By AAP-11, it was announced that the following ITU-T Recommendations were approved, in accordance with the procedures outlined in Recommendation ITU-T A.8:
- ITU-T H.222.0 v9 (2023) Amd. 1 (03/2025)
- ITU-T Q.3722 (03/2025)
- ITU-T Q.3956 (03/2025)
- ITU-T Q.3957 (03/2025)
- ITU-T Q.4076 (03/2025)
- ITU-T Q.4077 (03/2025)
- ITU-T Q.4078 (03/2025)
- ITU-T Q.4144 (03/2025)
- ITU-T Q.4164 (03/2025)
- ITU-T Q.5033 (03/2025)
Telephone Service
In accordance with ITU-T Recommendation E.164
Guyana +592
Communication of 14.IV.2025
The Telecommunications Agency , Georgetown, announces that the following national destination codes (NDC) and subscriber number (SN) ranges are currently assigned to the listed public telecommunications operators for the Co-operative Republic of Guyana. Numbers allocated to access emergency/social services are also listed below.
Presentation of national ITU-T E.164 numbering plan for country code 592
a) Overview:
The minimum fixed and mobile number length (excluding the country code) is seven (7) digits.
The maximum fixed and mobile number length (excluding the country code) is seven (7) digits.
International dialling format: +592 NXX XXXX
b) National Database (TBD)
c) Real-time Database (TBD)
d)
Fixed Network
|
National destination code (NXX) |
N(S)N number length |
Operator/Block assignee |
SN range (XXXX) |
|
|
Maximum length |
Minimum length |
|||
|
216 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
217 |
7 |
7 |
0000 – 1999 |
|
|
218 |
7 |
7 |
0000 – 9999 |
|
|
219 |
7 |
7 |
0000 – 9999 |
|
|
220 |
7 |
7 |
0000 – 9999 |
|
|
221 |
7 |
7 |
2000 – 4999 |
|
|
222 |
7 |
7 |
0000 – 9999 |
|
|
223 |
7 |
7 |
0000 – 9999 |
|
|
225 |
7 |
7 |
0000 – 9999 |
|
|
226 |
7 |
7 |
0000 – 9999 |
|
|
227 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
228 |
7 |
7 |
0000 – 6999 |
|
|
229 |
7 |
7 |
1000 – 8999 |
|
|
231 |
7 |
7 |
0000 – 9999 |
|
|
232 |
7 |
7 |
0000 – 4999; 9000 – 9999 |
|
|
233 |
7 |
7 |
0000 – 7999 |
|
|
234 |
7 |
7 |
0000 – 0999 |
|
|
253 |
7 |
7 |
0000 – 5999 |
|
|
254 |
7 |
7 |
0000 – 2999 |
|
|
255 |
7 |
7 |
0000 – 4999 |
|
|
256 |
7 |
7 |
0000 – 5999 |
|
|
257 |
7 |
7 |
0000 – 4999 |
|
|
258 |
7 |
7 |
0000 – 4999 |
|
|
259 |
7 |
7 |
0000 – 4999 |
|
|
260 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 6999 |
|
261 |
7 |
7 |
0000 – 9999 |
|
|
262 |
7 |
7 |
0000 – 2999 |
|
|
263 |
7 |
7 |
0000 – 7999 |
|
|
264 |
7 |
7 |
0000 – 4999 |
|
|
265 |
7 |
7 |
0000 – 8999 |
|
|
266 |
7 |
7 |
0000 – 7999 |
|
|
267 |
7 |
7 |
0000 – 3999 |
|
|
268 |
7 |
7 |
0000 – 5999 |
|
|
269 |
7 |
7 |
0000 – 2999 |
|
|
270 |
7 |
7 |
0000 – 9999 |
|
|
271 |
7 |
7 |
0000 – 9999 |
|
|
272 |
7 |
7 |
0000 – 2999 |
|
|
273 |
7 |
7 |
1000 – 1999 |
|
|
274 |
7 |
7 |
0000 – 2999 |
|
|
275 |
7 |
7 |
0000 – 2999 |
|
|
276 |
7 |
7 |
0000 – 5999 |
|
|
277 |
7 |
7 |
0000 – 5999 |
|
|
279 |
7 |
7 |
0000 – 4999 |
|
|
289 |
7 |
7 |
0000 – 9999 |
|
|
322 |
7 |
7 |
0000 – 6999 |
|
|
325 |
7 |
7 |
0000 – 6999 |
|
|
326 |
7 |
7 |
0000 – 5999 |
|
|
327 |
7 |
7 |
0000 – 2999, 5000 – 7999 |
|
|
328 |
7 |
7 |
0000 – 9999 |
|
|
329 |
7 |
7 |
0000 – 1999, 3000 – 6999 |
|
|
330 |
7 |
7 |
0000 – 4999 |
|
|
331 |
7 |
7 |
0000 – 4999 |
|
|
332 |
7 |
7 |
0000 – 4999 |
|
|
333 |
7 |
7 |
0000 – 9999 |
|
|
334 |
7 |
7 |
0000 – 2999 |
|
|
335 |
7 |
7 |
0000 – 1999, 3000 – 4999 |
|
|
336 |
7 |
7 |
5000 – 9999 |
|
|
337 |
7 |
7 |
0000 – 6999 |
|
|
338 |
7 |
7 |
1000 – 5999 |
|
|
339 |
7 |
7 |
0000 – 6999 |
|
|
440 |
7 |
7 |
0000 – 3999 |
|
|
441 |
7 |
7 |
0000 – 3999 |
|
|
442 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 4999 |
|
444 |
7 |
7 |
0000 – 9999 |
|
|
455 |
7 |
7 |
0000 – 3999 |
|
|
456 |
7 |
7 |
0000 – 2999 |
|
|
500 – 506 |
7 |
7 |
0000 – 9999 |
|
|
510 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
515 |
7 |
7 |
E-Networks Inc. |
0000 – 9999 |
|
771 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 2999, 4000 – 5999 |
|
772 |
7 |
7 |
0000 – 3999 |
|
|
773 |
7 |
7 |
0000 – 2999 |
|
|
774 |
7 |
7 |
0000 – 2999, 4000 – 5999 |
|
|
775 |
7 |
7 |
0000 – 3999 |
|
|
777 |
7 |
7 |
0000 – 9999 |
|
|
800 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 0009 |
|
862 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
1000 – 1999 |
|
868 |
7 |
7 |
0000 – 3999 |
|
|
888 |
7 |
7 |
8888 |
|
|
899 |
7 |
7 |
0000 – 9999 |
|
|
900 |
7 |
7 |
8000 – 8999 |
|
Mobile Network
|
National destination code (NXX) |
N(S)N Number length |
Operator/Block assignee |
SN range (XXXX) |
|
|
Maximum length |
Minimum length |
|||
|
600 – 604 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
605 |
7 |
7 |
Quark Communications Inc. |
0000 – 0999 |
|
605 |
7 |
7 |
DNA Enterprise Inc. |
1000 – 2999 |
|
606 |
7 |
7 |
E-Government |
0000 – 0999 |
|
608 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 0999 |
|
609 – 629 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
630 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
631 |
7 |
7 |
Green Gibraltar Inc. |
0000 – 9999 |
|
632 – 633 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
634 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
635 |
7 |
7 |
E-Networks Inc. |
0000 – 9999 |
|
636 – 637 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
638 – 658 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
659 – 704 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
705 – 709 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
710 – 720 |
7 |
7 |
E-Networks Inc. |
0000 – 9999 |
|
721 – 722 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
723 – 724 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
725 – 726 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
727 – 729 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
730 – 732 |
7 |
7 |
E-Networks Inc. |
0000 – 9999 |
|
733 – 742 |
7 |
7 |
E-Networks Inc. |
0000 – 9999 |
|
743 – 750 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
|
751 – 759 |
7 |
7 |
Guyana Telephone and Telegraph Co. Ltd. |
0000 – 9999 |
|
760 – 761 |
7 |
7 |
E-Networks Inc. |
0000 – 9999 |
|
769 – 770 |
7 |
7 |
U-Mobile (Cellular) Inc. |
0000 – 9999 |
- Newly assigned ranges
Emergency Services
|
Important number |
Service |
Allocated or Assigned |
ITU-T E.164 number or national only number |
|
911 |
Police (Emergency response) |
Allocated in the national numbering plan |
National-only number |
|
912 |
Fire / Ambulance (Emergency response) |
Allocated in the national numbering plan |
National-only number |
|
913 |
Ambulance (Emergency response) |
Allocated in the national numbering plan |
National-only number |
|
914 |
Domestic Violence (Hotline) |
Allocated in the national numbering plan |
National-only number |
Sudan +249
Communication of 9.IV.2025
The Telecommunications and Post Regulatory Authority , Khartoum, announces the following new NDC assignment in the national numbering plan of Sudan.
Description of introduction of new resource for national E.164 numbering plan for country code +249
|
NDC (national destination code) |
N(S)N number length |
Usage of E.164 number |
Additional information |
Time and date of introduction |
|
|
Maximum length |
Minimum length |
||||
|
101 |
9 |
9 |
Non-Geographic Number - Digital mobile telephony services |
(+249 10 1XX XXXX) Digital mobile (GSM) telephony services; assigned to Sudanese Telephone Company Ltd. (Sudatel). |
9 April 2025 |
Other communications
Austria
Communication of 04.IV.2025:
On the occasion of the 100 th anniversary of the "Austrian Amateur Radio Society (Österreichischer Versuchssenderverband - ÖVSV)", the Austrian Administration authorizes an Austrian amateur station to use the special call sign OE100OEVSV from 1 January to 31 December 2025.
Communication of 10.IV.2025:
On the occasion of the 175 th anniversary of the "Amt für Rüstung und Wehrtechnik", the Austrian Administration authorizes an Austrian amateur station to use the special call sign OE175ARWT from 1 June to 31 November 2025.
Service Restrictions
| Country/geographical area | OB |
|---|---|
| Seychelles | 1006 (page 13) |
| Slovakia | 1007 (page 12) |
| Malaysia | 1013 (page 5) |
| Thailand | 1034 (page 5) |
| São Tomé and Principe | 1039 (page 14) |
| Uruguay | 1039 (page 14) |
| Hong Kong, China | 1068 (page 4) |
| Ukraine | 1148 (page 5) |
| Türkiye | 1286 (page 17) |
| Bangladesh | 1287 (page 16) |
Call-back and alternative calling procedures (Res. 21 Rev. PP-2006)
Amendments
Abbreviations used in this section
- ADD
- Insert
- PAR
- Paragraph
- COL
- Column
- REP
- Replace
- LIR
- Read
- SUP
- Delete
- P
- Page(s)
Amd. to Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions
In accordance with ITU-T Recommendation E.212 (2016-09)
Position amended originally published as annex to ITU Operational Bulletin No. 1162 — 15.XII.2018
|
Country/Geographical area |
MCC+MNC |
Operator/Network |
|
Canada SUP |
|
|
|
302 996 |
BC Hydro (formerly Powertech Labs (experimental)) |
|
|
Canada LIR |
|
|
|
302 420 |
TELUS Mobility |
|
|
Georgia ADD |
|
|
|
282 18 |
"lagi" LTD |
|
|
Kyrgyzstan SUP |
|
|
|
437 11 |
iTel |
|
|
Kyrgyzstan ADD |
|
|
|
437 04 |
Alfa Telekom CJSC |
|
|
Kyrgyzstan LIR |
|
|
|
437 01 |
Sky Mobile LTD |
|
|
437 03 |
NUR Telekom LLC |
|
|
437 05 |
Alfa Telekom CJSC |
|
|
437 06 |
Kyrgyztelecom OJSC |
|
|
437 09 |
NUR Telekom LLC |
|
|
437 10 |
SAIMA TELECOM JSC |
MCC: Mobile Country Code / Indicatif de pays du mobile / Indicativo de país para el servicio móvil
MNC: Mobile Network Code / Code de réseau mobile / Indicativo de red para el servicio móvil
Amd. to List of ITU Carrier Codes
In accordance with ITU-T Recommendation M.1400 (2013-03)
Position amended originally published as annex to ITU Operational Bulletin No. 1060 — 15.IX.2014
|
Country or area/ISO code |
Company Code |
Contact |
|
Company Name/Address |
(carrier code) |
|
Germany (Federal Republic of) / DEU ADD
|
Computerwerke Viechtach GmbH Ringstrasse 9 D-94234 VIECHTACH |
COMWVI |
Mr Christof Englmeier Tel.: +49 9942 904726 Email: service@computerwerke-viechtach.de |
||
|
ingenia Glasfaser GmbH Rudolf-Diesel-Strasse 5 D-74592 Kirchberg a.d. Jagst |
INGLWL |
Mr Michael Neska Tel.: +49 6913 3660 Fax: +49 6913 36119 Email: backoffice@carrierwerke.de |
||
|
RegioNet Schweinfurt GmbH Bodelschwinghstr. 1 D-97421 SCHWEINFURT |
RNSW |
Mr Andreas Goeb Tel.: +49 9721 931 275 Fax: +49 9721 931 581 Email: regulierung@stadtwerke-sw.de |
||
|
RS net ID GmbH Ziegelhöfe 4 D-79341-KENZINGEN |
RSNET |
Mr Ronnie Schwoerer Tel.: +49 764478111 Email: rs@rs-netit.de |
||
|
Schollmeier Autofunk e.K. Heppenheimer Str. 23 D-68309 MANNHEIM |
SCHOTK |
Mr Nico Haas Tel.: +49 621 7209236 Email: nh@schollmeier.de |
||
|
Stadtwerke Gaggenau Service GmbH Theodor-Bergmann-Strasse 44 D-76571 GAGGENAU |
SWGSTK |
Mr Markus Schaub Tel.: +49 7225 9885 746 Fax: +49 7225 9885 705 Email: markus.schaub@stadtwerke-gaggenau.de |
||
|
weSystems Nordics ApS Damhaven 3B 1 DK-7100 VEJLE Denmark |
WESYST |
Mr Brian Norgaard Tel.: +45 89870989 Email: b.norgaard@wesystems.ag |
|
|
Amd. to National Numbering Plan
In accordance with ITU-T Recommendation E.129 (2013-01)
Administrations are requested to notify ITU about their national numbering plan changes, or to give an explanation on their webpage concerning the national numbering plan as well as their contact points, so that the information, which will be made available freely to all administrations/ROAs and service providers, can be posted on the ITU-T website.
For their numbering website, or when sending their information to ITU/TSB (e-mail: tsbtson@itu.int ), administrations are kindly requested to use the format as explained in Recommendation ITU-T E.129. They are reminded that they will be responsible for the timely update of this information.
From 1.IV.2025, the following countries/geographical areas have updated their national numbering plan on our site:
|
Country/ Geographical area |
Country Code (CC) |
|
Liberia |
+231 |
|
Lithuania |
+370 |