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OB

ITU Operational Bulletin

ITU Operational Bulletin·Biweekly publication of the ITU

Issue

No. 1319

Published1.VII.2025Cutoff18.VI.2025ISSN1564-5223
←13181320→

Forward schedule

Dates of publication of the next Operational Bulletins

24 upcoming
No.Publication dateIncluding information received by
No. 132015.VII.20253.VII.2025
No. 13211.VIII.202522.VII.2025
No. 132215.VIII.20251.VIII.2025
No. 13231.IX.202520.VIII.2025
No. 132415.IX.20255.IX.2025
No. 13251.X.202518.IX.2025
No. 132615.X.20252.X.2025
No. 13271.XI.202523.X.2025
No. 132815.XI.202531.X.2025
No. 13291.XII.202514.XI.2025
No. 133015.XII.202530.XI.2025
No. 13311.I.20268.XII.2025
No. 133215.I.202617.XII.2025
No. 13331.II.202616.I.2026
No. 133415.II.202630.I.2026
No. 13351.III.202613.II.2026
No. 133615.III.202627.II.2026
No. 13371.IV.202613.III.2026
No. 133815.IV.202627.III.2026
No. 13391.V.202615.IV.2026
No. 134015.V.202630.IV.2026
No. 13411.VI.202615.V.2026
No. 134215.VI.202629.V.2026
No. 13431.VII.202615.VI.2026

General Information

5 sections

General information

01

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.List
1117List of mobile country or geographical area codes((according to ITU-T E.212 (2016-09)))(position on 1.II.2017)
1096Legal time 2016
1073Legal time 2015
1049Legal time 2014
1027Legal time 2013
1002List of Country or Geographical Area Codes for non standard facilities in telematic services((according to ITU-T T.35 (2000-02)))(position on 12.IV.2012)
1001List 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 15.IV.2012)
1000Service Restrictions (Recapitulatory list of service restrictions in force relating to telecommunications operation)(position on 15.III.2012)
999Legal time 2012
994Dialling Procedures (International prefix, national (trunk) prefix and national (significant) number)((according to ITU-T E.164 (2010-11)))(position on 15.XII.2011)
991Call-Back and alternative calling procedures(position on 1.XI.2011)
982List of Recommendation ITU-T E.164 Assigned Country Codes((according to ITU-T E.164 (2010-11)))(position on 15.XII.2016)
981List of ITU Carrier Codes((according to ITU-T M.1400 (2013-03)))(position on 15.IX.2014)
980List of Telegram Destination Indicators((according to ITU-T F.32 (1995-10)))(position on 15.V.2011)
978List of Telex Destination Codes (TDC) and Telex Network Identification Codes (TNIC)(position on 15.IV.2011)
977List of Data Network Identification Codes (DNIC)((according to ITU-T X.121 (2000/10)))(position on 31.V.2025)
976List of Data Country or Geographical Area Codes((according to ITU-T X.121 (2000/10)))(position on 15.III.2011)
974List of Names of Administration Management Domains (ADMD)((according to ITU-T F.400))(position on 15.II.2011)
972List of terrestrial trunk radio mobile country codes((according to ITU-T E.218 (2004-5)))(position on 1.VI.2017)
971List of Issuer Identifier Numbers for the International Telecommunication Charge Card((according to ITU-T E.118 (2006-05)))(position on 31.XII.2023)
968Status 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 31.VIII.2022)
967List of Access codes/numbers for mobile networks((according to ITU-T E.164 (2010-11)))(position on 1.XI.2012)
965List of Signalling Area/Network Codes (SANC)((according to ITU-T Q.708 (1999-03)))(position on 31.V.2024)
958Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions((according to ITU-T E.212 (2016-09)))(position on 14.XI.2023)
956List of International Signalling Point Codes (ISPC)((according to ITU-T Q.708 (1999-03)))(position on 30.VI.2024)
955Various tones used in national networks((according to ITU-T E.180 (1998-3)))(position on 1.V.2010)
669Five-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:

02

Approval of ITU-T Recommendations

By AAP-15, it was announced that the following ITU-T Recommendations were approved, in accordance with the procedures outlined in Recommendation ITU-T A.8:

03

Service Restrictions

Authoritative resource

Country / Geographical AreaOB No.PageNote
Seychelles100613
Slovakia100712
Malaysia10135
Thailand10345
São Tomé and Principe103914
Uruguay103914
Hong Kong, China10684
Ukraine11485
Türkiye128617
Bangladesh128716
04

Call-back and alternative calling procedures (Res. 21 Rev. PP-2006)

05

Telephone Service

In accordance with ITU-T Recommendation E.164

Authoritative resource

Guyana +592

Telecommunications Agency
Director of Telecommunications
190 Charlotte Street, Bourda, 
GEORGETOWN 
Guyana
Tel: 		+592 225-3104/226-2233
E-mail: 	odir1@telecoms.gov.gy
URL: 		www.telecoms.gov.gy
Communication of 12.VI.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)

  

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

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

511

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

Amendments

Abbreviations used in this section

ADD
Insert
PAR
Paragraph
COL
Column
REP
Replace
LIR
Read
SUP
Delete
P
Page(s)
3 publications
01

Amd. no. 35 to Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions

ITU-T E.212 2016-09
Amd 35Position amended originally published as annex to OB No. 1280 · 14.XI.2023Authoritative ↗
ADD1319-001AdditionEffective14.X.2023
mcc mnc codescountry or areanetworks
 Colombia        ADD 
732 230SETROC MOBILE GROUP SAS
 Switzerland    ADD 
228 13Schweizerische Bundesbahn SBB

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

02

Amd. no. 190 to List of ITU Carrier Codes

ITU-T M.1400 2013-03
Amd 190Position amended originally published as annex to OB No. 1060 · 15.IX.2014Authoritative ↗
ADDGermany (FederalAdditionEffective15.VIII.2014
country or areacompany nameaddress line 1address line 2carrier codecontacttel
GermanyPrechtl Cl GmbHAn der B20, Nr. 1D-83404 AINRINGPINFRAMr Jonas Prechtl+49 86826504908
ADD1319-002AdditionEffective15.VIII.2014
country or areacompany nameaddress line 1address line 2carrier codecontacttelfax
Germanytinana GmbHIm Teelbruch 118D-45219 ESSENTINANAMr Clemens Block+49 15255379725+49 20548002059
03

Amd. to National Numbering Plan

ITU-T E.129 2013-01
ADD1319-001Addition
country or areacountry code
Morocco+212
Venezuela+58

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.VI.2025, the following countries/geographical areas have updated their national numbering plan on our site:

View older issues

Official source

See the authoritative resource for this edition of ITU Operational Bulletin on the ITU website.

Contacts

Place des Nations CH-1211 Genève 20 (Switzerland)

Tel: +41 22 730 5111

Email: itumail@itu.int ★

Standardization Bureau (TSB)

Tel: +41 22 730 5211 ★

Fax: +41 22 730 5853 ★

Email: tsbmail@itu.int ★

Email: tsbtson@itu.int ★

Radiocommunication Bureau (BR)

Tel: +41 22 730 5560 ★

Fax: +41 22 730 5785 ★

Email: brmail@itu.int ★