AS23764 — CTGNet - CTGNet

AS23764 announces 121 IPv4 prefixes covering 50,432 addresses and 29 IPv6 prefixes.

About this network

CTGNET is operated by China Telecom Global Limited.

What it's used for

• The address space carries international and regional infrastructure for China Telecom, with netnames including CTGL-AP, UK-CHINATELECOM, and CTHKI-HK.
• The AS announces 50,176 IPv4 addresses and 29 IPv6 prefixes, maintaining 555 observed neighbours; this high neighbour count relative to the address inventory indicates a transit or network service provider role.

Notable

• Registrants include CHINA TELECOM GLOBAL LIMITED, CHINA TELECOM HONG KONGINTERNATIONAL LTD, China Telecom do Brasil Ltda., and China Telecom South Africa (Pty) Ltd., reflecting a global corporate estate.
• The inventory consists of 122 IPv4 prefixes, with the largest blocks being /21s in the 202.55.0.0/16 and 203.196.0.0/16 ranges.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 5.10.136.0/24
• 5.154.130.0/24
• 5.154.144.0/22
• 5.154.154.0/23
• 5.154.156.0/22
• 45.195.4.0/23
• 45.195.7.0/24
• 45.196.24.0/23
• 45.196.27.0/24
• 61.186.2.0/24
• 63.140.4.0/24
• 63.140.8.0/24
• 63.140.14.0/24
• 69.194.163.0/24
• 69.194.171.0/24
• 69.194.172.0/23
• 69.194.175.0/24
• 79.139.4.0/23
• 79.139.6.0/24
• 79.139.8.0/24
• 79.139.10.0/23
• 79.139.13.0/24
• 79.139.14.0/24
• 95.130.192.0/24
• 95.130.194.0/24
• 95.130.199.0/24
• 102.217.164.0/24
• 102.217.166.0/23
• 121.59.38.0/24
• 121.59.100.0/24
• 121.59.106.0/24
• 121.59.120.0/24
• 121.59.122.0/24
• 121.59.124.0/24
• 121.59.140.0/24
• 125.93.24.0/22
• 131.221.80.0/22
• 139.189.127.0/24
• 145.14.64.0/24
• 145.14.69.0/24
• 145.14.79.0/24
• 145.14.92.0/24
• 147.78.133.0/24
• 147.78.135.0/24
• 154.72.40.0/22
• 154.72.45.0/24
• 154.72.46.0/24
• 154.209.21.0/24
• 154.209.23.0/24
• 156.238.20.0/24
• 156.242.4.0/24
• 156.242.8.0/24
• 183.91.51.0/24
• 183.91.63.0/24
• 185.75.172.0/24
• 202.55.2.0/23
• 202.55.5.0/24
• 202.55.6.0/23
• 202.55.8.0/21
• 202.55.16.0/23
• 202.55.30.0/24
• 203.8.30.0/24
• 203.12.200.0/22
• 203.12.204.0/23
• 203.14.188.0/22
• 203.15.113.0/24
• 203.15.116.0/23
• 203.15.118.0/24
• 203.19.32.0/22
• 203.19.37.0/24
• 203.19.38.0/24
• 203.20.51.0/24
• 203.20.136.0/23
• 203.20.140.0/22
• 203.33.8.0/23
• 203.33.10.0/24
• 203.34.194.0/24
• 203.34.196.0/23
• 203.34.199.0/24
• 203.56.55.0/24
• 203.80.136.0/22
• 203.80.141.0/24
• 203.81.0.0/24
• 203.81.3.0/24
• 203.81.4.0/24
• 203.81.6.0/24
• 203.82.17.0/24
• 203.82.18.0/23
• 203.82.23.0/24
• 203.86.103.0/24
• 203.86.106.0/24
• 203.86.109.0/24
• 203.86.111.0/24
• 203.86.113.0/24
• 203.86.115.0/24
• 203.86.126.0/23
• 203.89.10.0/23
• 203.89.12.0/24
• 203.99.10.0/23
• 203.99.13.0/24

and 50 more.

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS2914 NTT America, Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS174 Cogent Communications, LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS24482 SG.GS
• AS17639 Converge ICT Solutions Inc.
• AS50304 Blix Solutions AS
• AS48185 team.blue NV
• AS29504 Freenet Liberec, z.s.
• AS204092 Association GRIFON
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50628 Leonix Telecom SAS
• AS45049 Mohamed El Bouddunti
• AS50300 CustodianDC Limited
• AS3257 GTT Communications Inc.
• AS3320 Deutsche Telekom AG
• AS42708 Glesys Sweden AB
• AS3303 Swisscom (Schweiz) AG
• AS8551 Bezeq International Ltd.
• AS20485 Joint Stock Company TransTeleCom
• AS212024 Marc Schmitt
• AS37100 SEACOM Limited

Downstream networks

• AS45899 VNPT Corp
• AS4538 China Education and Research Network Center
• AS9198 JSC Kazakhtelecom
• AS4809 China Telecom Next Generation Carrier Network
• AS4800 PT Aplikanusa Lintasarta
• AS24757 Ethio Telecom
• AS4134 No.31,Jin-rong Street
• AS38623 ISP/IXP IN CAMBODIA WITH THE BEST VERVICE IN THERE.
• AS18403 FPT Telecom Company
• AS9541 Cyber Internet Services (Pvt) Ltd.
• AS38901 EZECOM CO., LTD.
• AS51375 STC BAHRAIN B.S.C CLOSED
• AS9534 Binariang Berhad
• AS10226 ETL Company Limited
• AS31133 PJSC MegaFon
• AS36902 Intelvision Ltd
• AS38182 Extreme Broadband - Total Broadband Experience
• AS136167 CHINA TELECOM (MACAU) COMPANY LIMITED
• AS33771 Safaricom Limited
• AS64079 China Telecom Global Limited
• AS9299 Philippine Long Distance Telephone Company
• AS55685 PT Jala Lintas Media
• AS18046 DongFong Technology Co. Ltd.
• AS23752 Nepal Telecommunications Corporation, Internet Services,
• AS4788 TM TECHNOLOGY SERVICES SDN. BHD.

Adjacent networks

• AS45899 VNPT Corp
• AS55720 Gigabit Hosting Sdn Bhd
• AS4134 No.31,Jin-rong Street
• AS3356 Level 3 Parent, LLC
• AS4538 China Education and Research Network Center
• AS6939 Hurricane Electric LLC
• AS31133 PJSC MegaFon
• AS4800 PT Aplikanusa Lintasarta
• AS34549 meerfarbig GmbH & Co. KG
• AS38158 PT. Cyberindo Aditama
• AS1299 Arelion Sweden AB
• AS2914 NTT America, Inc.
• AS17639 Converge ICT Solutions Inc.
• AS4809 China Telecom Next Generation Carrier Network
• AS9848 SEJONG NETWORKS
• AS29504 Freenet Liberec, z.s.
• AS136897 Enjoyvc Cloud Group Limited.
• AS50628 Leonix Telecom SAS
• AS202297 Skylon Solutions Limited
• AS45049 Mohamed El Bouddunti
• AS9198 JSC Kazakhtelecom
• AS174 Cogent Communications, LLC
• AS138840 PT. PARSAORAN GLOBAL DATATRANS - NAP
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS50673 Serverius Holding B.V.

Routing security

• RPKI: 203 valid, 0 invalid and 12 not-found announcements; 436 ROAs.
• ASPA: none published.
• IRR: 93% of announcements registered; 7,209 route objects.
• Listed in as-sets: AS-131274, AS-36678, AS-ANC, AS-BKNIX-RS, AS-BNIX, AS-BTELEKOM, AS-CN2, AS-CTB, AS-CTB-ANTIDDOS, AS-CTBC-CUSTOMERS247, AS-CTBC-TOOLS-7, AS-CTGNET, AS-CTGNET-CUT, AS-EMIX, AS-HGC-INTL, AS-HURRICANE, AS-HURRICANEV6, AS-IIJ, AS-KDD, AS-KDDCUSTOMER2, AS-LIQUID, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6.

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• NAPAfrica IX Johannesburg — Johannesburg, South Africa
• France-IX Paris — Paris, France
• Equinix Internet Exchange Singapore — Singapore, Singapore
• Milan Internet Exchange — Milan, Italy
• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• IX.br (PTT.br) Porto Alegre — Porto Alegre, Brazil
• NAPAfrica IX Cape Town — Cape Town, South Africa
• Hong Kong Internet Exchange — Hong Kong, China
• JPIX Tokyo — Tokyo, Japan
• Singapore Internet Exchange — Singapore, Singapore
• NetIX — Sofia, Bulgaria
• Equinix Internet Exchange Paris — Paris, France
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• Roma Internet Exchange Point — Rome, Italy
• Johannesburg Internet Exchange — Johannesburg, South Africa
• NIX.CZ - Neutral Internet eXchange for the Czech Republic — Prague, Czech Republic
• ERA-IX Amsterdam — Amsterdam, Netherlands
• Taipei Internet Exchange (TPIX) — Taipei, Taiwan
• Vienna Internet Exchange — Vienna, Austria
• ESpanix Madrid Lower LAN — Madrid, Spain
• Kenya Internet Exchange Point - Nairobi — Nairobi, Kenya
• Internet Exchange Point of Nigeria - Lagos — Lagos, Nigeria
• Cape Town Internet Exchange — Cape Town, South Africa
• Internet Neutral Exchange Association CLG - LAN1 — Dublin, Ireland
• UAE-IX — Dubai, United Arab Emirates
• ERA-IX Frankfurt — Frankfurt, Germany
• Belgian National Internet Exchange — Brussels, Belgium
• Bangkok Neutral Internet Exchange — Bangkok, Thailand
• Netnod Stockholm — Stockholm, Sweden
• Korea Internet Neutral Exchange KINX — Seoul, South Korea
• AMS-IX Lagos — Lagos, Nigeria
• Asteroid Mombasa — Mombasa, Kenya
• Cambodian Network Exchange — Phnom Penh, Cambodia
• Kenya Internet Exchange Point - Mombasa — Mombasa, Kenya
• Netnod Sundsvall- Gävle — Sundsvall, Sweden