AS15412 — FLAG-AS Flag Telecom UK Limited

AS15412 announces 20 IPv4 prefixes covering 32,768 addresses and 1 IPv6 prefixes.

About this network

A submarine cable carrier with three hundred and eighty neighbours, carrying blocks from another region's registry.

What it's used for

• A long distance carrier built around undersea cable. Twenty-two IPv4 prefixes and one IPv6 /32 announced from the United Kingdom, thirty-three thousand addresses, across three hundred and eighty observed BGP neighbours.

Notable

• Five blocks use the carrier's own netname pattern of country code, company and allocation date, with an abuse role naming the group that acquired it.
• Six more are customer blocks registered in a different region's registry, each with a two letter country suffix and an incident response team object, a convention that registry uses and the other does not.
• One block is registered to the carrier's arm in a third country.
• Two answering addresses combine a word for delivery with their octets under a domain about network management; a third puts the address fully reversed under a domain about computing analysis.
• Eighteen addresses were queried for reverse DNS and three returned a name.

Interesting

• Three hundred and eighty neighbours is the number that matters. That is a carrier whose business is carrying other networks' traffic between continents, and it dwarfs its own address holdings.
• Mixing two registries' conventions inside one routing table is what selling capacity across regions looks like in the data.
• The generic domains on the answering addresses say very little about who is behind them, which is itself a choice worth noticing.

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

Announced prefixes

• 43.248.216.0/22
• 45.125.188.0/22
• 62.216.128.0/19
• 80.77.0.0/20
• 80.81.64.0/21
• 80.81.72.0/22
• 80.81.78.0/23
• 80.81.80.0/20
• 85.95.24.0/22
• 103.5.160.0/22
• 103.8.84.0/22
• 103.11.237.0/24
• 103.15.116.0/22
• 103.103.152.0/22
• 103.144.202.0/23
• 103.225.192.0/22
• 203.79.33.0/24
• 203.79.34.0/23
• 203.79.36.0/22
• 203.79.40.0/21
• 2001:1a00::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS1299 Arelion Sweden AB
• AS2914 NTT America, Inc.
• AS1257 Tele2 Sverige AB
• AS12389 PJSC Rostelecom
• AS2497 Internet Initiative Japan Inc.
• AS3491 PCCW Global (HK) Ltd.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS24482 SG.GS
• AS7575 Australian Academic and Research Network (AARNet)
• AS48185 team.blue NV
• AS37721 Virtual Technologies & Solutions
• AS38855 Taiwan Digital Streaming Co.
• AS17639 Converge ICT Solutions Inc.
• AS33891 Core-Backbone GmbH
• AS3303 Swisscom (Schweiz) AG
• AS12552 GlobalConnect AB
• AS6830 Liberty Global Europe Holding B.V.
• AS8551 Bezeq International Ltd.
• AS4637 Telstra Global
• AS9002 RETN Limited
• AS13030 Init7 (Switzerland) Ltd.
• AS50628 Leonix Telecom SAS
• AS6453 TATA COMMUNICATIONS (AMERICA) INC

Downstream networks

• AS18101 Reliance Communications Ltd.DAKC MUMBAI
• AS5416 B.S.C.
• AS9304 HGC Global Communications Limited
• AS30873 Public Telecommunication Corporation
• AS15802 Emirates Integrated Telecommunications Company PJSC
• AS135607 Infinivan Incorporated
• AS47589 Kuwait Telecommunications Company K.S.C.C.
• AS45903 CMC Telecom Infrastructure Company
• AS9848 SEJONG NETWORKS
• AS33788 Kanar Telecommunication (Canar Telecom Co.Ltd)
• AS132827 GATEWAY INC
• AS8452 IDDQD-AS
• AS29357 NATIONAL MOBILE TELECOMMUNICATIONS COMPANY K.S.C.P.
• AS4775 Globe Telecoms
• AS17639 Converge ICT Solutions Inc.
• AS55355 ISP
• AS17470 Hutchison Telecommunications Lanka (Private) Limited
• AS9416 Hoshin Multimedia Center Inc.
• AS35019 Bahrain Internet Exchange
• AS17408 AboveNet Communications Taiwan
• AS132447 234, Galle Road, Colombo 4
• AS23749 HKCOLO ltd. Internet Service Provider
• AS260 GTT Americas, LLC
• AS60045 Kube Networks Ltd
• AS4826 Vocus Connect International Backbone

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS9304 HGC Global Communications Limited
• AS18101 Reliance Communications Ltd.DAKC MUMBAI
• AS8452 IDDQD-AS
• AS1299 Arelion Sweden AB
• AS5416 B.S.C.
• AS9848 SEJONG NETWORKS
• AS174 Cogent Communications, LLC
• AS135607 Infinivan Incorporated
• AS38855 Taiwan Digital Streaming Co.
• AS2914 NTT America, Inc.
• AS33891 Core-Backbone GmbH
• AS33788 Kanar Telecommunication (Canar Telecom Co.Ltd)
• AS15802 Emirates Integrated Telecommunications Company PJSC
• AS45903 CMC Telecom Infrastructure Company
• AS7568 CS LOXINFO Public Company Limited.
• AS17408 AboveNet Communications Taiwan
• AS4826 Vocus Connect International Backbone
• AS30873 Public Telecommunication Corporation
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS29357 NATIONAL MOBILE TELECOMMUNICATIONS COMPANY K.S.C.P.
• AS45430 SBN-IIG/AWN-IIG transit provider
• AS9924 Taiwan Fixed Network, Telco and Network Service Provider.
• AS47589 Kuwait Telecommunications Company K.S.C.C.
• AS12552 GlobalConnect AB

Routing security

• RPKI: 16 valid, 0 invalid and 5 not-found announcements; 20 ROAs.
• ASPA: none published.
• IRR: 86% of announcements registered; 50 route objects.
• Listed in as-sets: AS-10099, AS-31576-PEERS, AS-36992, AS-38176, AS-39273, AS-45572, AS-4648-PAIX-PEER, AS-59342, AS-8764-EXCLUDE-AMS-IX-RS, AS-ANY2-RS, AS-ATRATO:AS-PEERS, AS-BATELCO-BH, AS-BBNED-AMSIX1, AS-BBSPH, AS-BSVE:AS-LINX-PEERS-1, AS-BSVE:AS-LINX-PEERS-2, AS-BTN-CUSTOMERS, AS-CN2, AS-CTGNET-CUT, AS-CWCUSTEU, AS-CYBERIA, AS-DIVIVOX, AS-EQUINIX-9989-PEERS, AS-ETISALAT_MISR, AS-FINECOM-PEERS-AMSIX.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• Equinix Internet Exchange Singapore — Singapore, Singapore
• Equinix Internet Exchange Ashburn — Ashburn, United States
• Coresite - Any2 West — Los Angeles, United States
• Any2 California — Los Angeles, United States
• Hong Kong Internet Exchange — Hong Kong, China
• JPIX Tokyo — Tokyo, Japan
• Equinix Internet Exchange Chicago — Chicago, United States
• DE-CIX New York — New York, United States
• Equinix Internet Exchange Sydney — Sydney, Australia
• Equinix Internet Exchange Paris — Paris, France
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• New York International Internet Exchange — New York, United States
• Taipei Internet Exchange (TPIX) — Taipei, Taiwan
• Student & Technology United Internet Exchanges — Taipei, Taiwan
• France-IX Marseille — Marseille, France
• Equinix Internet Exchange Tokyo — Tokyo, Japan
• UAE-IX — Dubai, United Arab Emirates
• Equinix Internet Exchange Palo Alto — Palo Alto, United States
• Korea Internet Neutral Exchange KINX — Seoul, South Korea
• AMS-IX Hong Kong — Hong Kong, China
• Doha IX — Doha, Qatar