ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1291	1.V.2024	(Information received by 15 April 2024) ISSN 1564-5223 (Online)
Place des Nations CH-1211 Genève 20 (Switzerland) Tel: +41 22 730 5111 E-mail: itumail@itu.int		Standardization Bureau (TSB) Tel: +41 22 730 5211 Fax: +41 22 730 5853 E-mail: tsbmail@itu.int / tsbtson@itu.int	Radiocommunication Bureau (BR) Tel: +41 22 730 5560 Fax: +41 22 730 5785 E-mail: brmail@itu.int

Table of Contents

GENERAL INFORMATION

Lists annexed to the ITU Operational Bulletin: Note from TSB.... 3

Approval of ITU-T Recommendations.. 4

Assignment of Signalling Area/Network Codes (SANC): Note from TSB

Telephone Service:

Armenia (Ministry of High-Tech Industry, Yerevan)

Guyana (Telecommunications Agency, Georgetown)

Kyrgyzstan (Service on Regulation and Supervision in Communication Industry under the Ministry
of Digital Development of the Kyrgyz Republic, Bishkek)

Other communication:

Austria

Service Restrictions.. 23

Call-Back and alternative calling procedures (Res. 21 Rev. PP-06).. 23

AMENDMENTS TO SERVICE PUBLICATIONS

List of Issuer Identifier Numbers

Mobile Network Codes (MNC) for the international identification plan for public networks
and subscriptions

List of ITU Carrier Codes.. 26

List of Signalling Area/Network Codes (SANC)

List of International Signalling Point Codes (ISPC)

National Numbering Plan.... 30