AS5400 British Telecommunications Limited
IPv4 addresses
714,496
IPv6 /48 networks
59,316,480
RPKI
98 valid28 no ROA
Peers and downstreams
230
Holder
- AS name
- BT
- Description
- British Telecommunications Limited
- Organisation
- British Telecommunications Limited
- Abuse contact
- abuse@eu.bt.net
- Assigned
- 1995-08-14
- Registered
- 2002-08-29
- Record last changed
- 2026-03-18 06:09 UTC
132.244.240.0/24132.244.64.0/21132.244.72.0/21136.238.224.0/24136.238.84.0/24136.238.85.0/24166.49.128.0/17185.249.4.0/24185.94.0.0/22192.109.52.0/24193.58.130.0/23194.107.114.0/24194.213.64.0/19194.33.53.0/24194.33.54.0/24194.33.55.0/24194.50.160.0/24194.74.80.0/21194.76.40.0/24195.100.0.0/16195.163.0.0/16195.171.36.0/22195.182.96.0/19195.36.104.0/24195.36.82.0/24195.60.182.0/24195.60.183.0/24195.66.70.0/24195.90.64.0/19195.99.64.0/20198.178.236.0/24203.158.68.0/23203.158.72.0/23203.158.76.0/23203.158.88.0/24203.158.89.0/24204.231.112.0/24204.52.188.0/24206.73.0.0/16206.73.0.0/19206.73.112.0/22206.73.116.0/22206.73.156.0/22206.73.48.0/20206.73.80.0/20212.108.0.0/19212.127.0.0/19212.162.192.0/18212.21.192.0/19212.31.192.0/19212.41.128.0/19212.8.160.0/19213.137.160.0/19213.15.0.0/16213.194.0.0/18213.236.64.0/1831.95.0.0/2131.95.14.0/2331.95.16.0/2031.95.160.0/2031.95.184.0/2131.95.208.0/2131.95.218.0/2331.95.220.0/2231.95.240.0/2231.95.246.0/2331.95.248.0/2231.95.254.0/2331.95.48.0/2131.95.56.0/2431.95.64.0/2131.95.96.0/1946.248.10.0/2346.248.8.0/2362.102.0.0/1762.134.0.0/1662.172.0.0/2162.173.192.0/1862.180.0.0/1662.5.0.0/1780.255.160.0/2080.255.160.0/2480.255.161.0/2480.255.162.0/2482.138.160.0/1982.150.0.0/19
2001:740::/322402:fb00:8000::/392402:fb00:8400::/392402:fb00:8800::/402402:fb00:c000::/392402:fb00:c200::/392606:f100:d000::/392606:f100:d400::/392606:f100:d600::/392606:f100:d800::/382606:f100:dc00::/382606:f100:e400::/392a00:2000::/232a00:2080::/322a00:2081::/322a00:2082::/322a00:2083::/322a00:2084::/322a00:2086::/322a00:2089::/322a00:208a::/322a00:208b::/322a00:208c::/322a00:208d::/322a00:2090::/322a00:2094::/322a00:2095::/322a00:2096::/322a00:2097::/322a00:2200::/252a00:2200:200::/402a00:2200:2000::/402a00:2200:300::/402a00:2200:5300::/402a00:2200:900::/402a00:2200:b00::/402a00:2200:d00::/402a00:2280::/252a00:2300::/252a0c:7c80::/29
| AS174 | |
| AS1299 | Arelion Sweden AB TWELVE99 |
| AS2856 | British Telecommunications Limited BT-UK-AS |
| AS3257 | GTT Communications Inc. GTT-BACKBONE |
| AS3320 | Deutsche Telekom AG DTAG |
| AS3356 | Level 3 Parent, LLC LEVEL3 |
| AS3491 | PCCW Global (HK) Ltd. PCCWG-APAC-HK |
| AS4637 | Telstra Global ASN-TELSTRA-GLOBAL |
| AS6453 | TATA COMMUNICATIONS (AMERICA) INC AS6453 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. SEABONE-NET |
| AS6939 | Hurricane Electric LLC HURRICANE |
| AS9002 | RETN Limited RETN-AS |
| AS12956 | TELEFONICA GLOBAL SOLUTIONS SL TELXIUS |
| AS20485 | Joint Stock Company TransTeleCom TRANSTELECOM |
| AS33891 | Core-Backbone GmbH CORE-BACKBONE |
| AS39351 | 31173 Services AB ESAB-AS |
| AS42 | |
| AS72 | |
| AS174 | |
| AS719 | Elisa Oyj ELISA-AS |
| AS766 | Entidad Publica Empresarial Red.es RedIRIS |
| AS1120 | ACONET ACOnet_Services |
| AS1299 | Arelion Sweden AB TWELVE99 |
| AS1741 | Tieteen tietotekniikan keskus Oy FUNETAS CSC |
| AS1853 | ACONET ACOnet |
| AS1955 | KIFU (Governmental Info Tech Development Agency) HBONE-AS |
| AS2110 | Enet Communications LIMITED AS-BTIRE |
| AS2686 | AT&T Enterprises, LLC ATGS-MMD-AS |
| AS2856 | British Telecommunications Limited BT-UK-AS |
| AS2860 | NOS COMUNICACOES, S.A. NOS_COMUNICACOES |
| AS2906 | Netflix Streaming Services Inc. AS-SSI |
| AS3257 | GTT Communications Inc. GTT-BACKBONE |
| AS3300 | British Telecommunications Limited BT |
| AS3356 | Level 3 Parent, LLC LEVEL3 |
| AS3573 | Accenture LLP ACCENTURE |
| AS4775 | Globe Telecoms GLOBE-TELECOM-AS |
| AS5091 | Stripe, Inc. STRIPE |
| AS5432 | Proximus NV PROXIMUS-ISP-AS |
| AS6079 | RCN RCN-AS |
| AS6128 | Cablevision Systems Corp. CABLE-NET-1 |
| AS7246 | Bristol-Myers Squibb Company BMS-AS |
| AS7734 | Toronto Dominion Bank TDBANK |
| AS8447 | A1 Telekom Austria AG A1TELEKOM-AT |
| AS8590 | Bayerische |
| AS8903 | LYNTIA NETWORKS S.A. AS8903 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC Etisalat-AS |
| AS8968 | RETELIT-X S.R.L. BT-Italia |
| AS9002 | RETN Limited RETN-AS |
| AS9121 | TTNet |
| AS10780 | Pure Storage, INC. PURE-STORAGE |
| AS11164 | Internet2 INTERNET2-I2PX |
| AS12257 | Dell, Inc. EMC-AS12257 |
| AS12298 | QIAGEN GmbH QIAGEN-AS |
| AS12331 | Audi AG AUDI-AS |
| AS12389 | PJSC Rostelecom ROSTELECOM-AS |
| AS12430 | VODAFONE ESPANA S.A.U. VODAFONE_ES |
| AS12440 | Hughes Network Systems GmbH AS12440 |
| AS12552 | GlobalConnect AB GlobalConnect-AS12552 |
| AS12734 | Stellantis Auto SAS FIAT-AS1 |
| AS12741 | Netia SA AS-NETIA |
| AS13130 | Autostadt GmbH Autostadt |
| AS13205 | Telecommunications Limited British |
| AS13335 | Cloudflare, Inc. CLOUDFLARENET |
| AS14361 | HopOne Internet Corporation HOPONE-GLOBAL |
| AS15412 | Flag Telecom UK Limited FLAG-AS |
| AS15442 | Procter & Gamble Service GmbH PG-Europe |
| AS15466 | Commando Materieel en IT ASN-DTO |
| AS15518 | Circular Informationssysteme GmbH CIRC-AS |
| AS16147 | Nederland Politie |
| AS16509 | Amazon.com, Inc. AMAZON-02 |
| AS16839 | SERVICENOW, INC. SNC |
| AS19151 | BroadbandONE, LLC BBO-1 |
| AS20485 | Joint Stock Company TransTeleCom TRANSTELECOM |
| AS20561 | Schaeffler Technologies AG & Co. KG AS20561-INA |
| AS20868 | ABB Information Systems Ltd ABB |
| AS20940 | Akamai International B.V. AKAMAI-ASN1 |
| AS21000 | Atos France SAS ATOS-AS |
| AS21277 | Allay Nawroz Telecom Company for Communication/Ltd. Newroz-Telecom-ASN |
| AS21320 | GEANT Vereniging GEANT_IAS_VRF |
| AS21433 | Accenture UK Limited AccentureFSSC |
| AS21489 | The North Atlantic Treaty Organization SHAPE-AS |
| AS21859 | Zenlayer Inc ZEN-ECN |
| AS22683 | Koninklijke Philips N.V. PHILIPS-INTERNET |
| AS24940 | Hetzner Online GmbH HETZNER-AS |
| AS25049 | Shell Information Technology International B.V. STASCO-UK-AS |
| AS25261 | IBERIA LINEAS AEREAS DE ESPANA SOCIEDAD ANONIMA OPERADORA IBERIA |
| AS26380 | MasterCard Technologies LLC MASTER-7-AS |
| AS27311 | Biogen MA Inc AS27311 |
| AS28879 | CECONOMY AG SATURN-MEDIA-AS |
| AS29063 | Eviden Netherlands B.V. Atos-NL-AS |
| AS29119 | AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL SERVIHOSTING-AS |
| AS30614 | Dell, Inc. DELL-BLK |
| AS30864 | Elavon Financial Services DAC Elavon-Financial-Services-DAC_AS |
| AS31027 | GlobalConnect A/S GlobalConnect-AS31027 |
| AS31614 | European Central Bank ECB-AS |
| AS33873 | Arvato Systems GmbH arvato-systems-AS |
| AS34311 | LG CNS Europe B.V LG-AS |
| AS34460 | PHOENIX International Holdings GmbH PHOENIX-AS |
| AS35280 | F5 Networks SARL F5 |
| AS37100 | SEACOM Limited |
| AS37468 | Angola Cables |
| AS38191 | Infosys Technologies Ltd INFOSYS-AS |
| AS39737 | Prime Telecom srl Prime-Telecom-AS |
| AS40126 | Molson Coors Beverage Company AS-MOLSONCOORS |
| AS40934 | Fortinet Inc. FORTINET |
| AS42708 | Glesys AB GLESYS |
| AS43033 | Telio Communications GmbH Telio-Communications-GmbH |
| AS43949 | Marsh Limited MMC |
| AS43996 | Booking.com BV Booking-BV |
| AS44444 | Forcepoint UK Limited Forcepoint-Cloud-AS |
| AS48647 | Solvay SA SOLVAY |
| AS49544 | i3D.net B.V i3Dnet |
| AS51046 | Bringo Limited BRINGOIE |
| AS51466 | Bridgestone Europe NV Bridgestone-Europe-AS |
| AS51527 | Hyundai AutoEver Europe GmbH AUTOEVER-EUROPE |
| AS52320 | GlobeNet Cabos Submarinos Colombia, S.A.S. AS52320 |
| AS54994 | Meteverse Limited. ML-1432-54994 |
| AS55290 | Depository Trust & Clearing Corporation DTCC-CDZ-CVO |
| AS57976 | Blizzard Entertainment, Inc BLIZZARD |
| AS58453 | China Mobile International Limited CMI-INT-HK |
| AS59724 | Elsevier Limited REED-ELSEVIER-EMEA-GCC |
| AS60112 | Clarins SAS Clarins-HQ |
| AS132203 | Tencent Building, Kejizhongyi Avenue TENCENT-NET-AP-CN |
| AS199541 | EUROCONTROL, the European Organisation for the Safety of Air Navigation EUROCONTROL-AS |
| AS200361 | CONCENTRIX SERVICES BULGARIA EOOD concentrix |
| AS202097 | IBERMUTUA |
| AS202666 | International Flavors & Fragrances I.F.F. (Nederland) B.V IFF_CPH |
| AS203990 | Accertify LLC acc_eu |
| AS206625 | Enterprise Holdings, Inc. EHI-AME-AS |
| AS208053 | Clarins SAS Clarins-HQ |
| AS212565 | Specsavers Optical Group Limited SPECSAVERS |
| AS394805 | ReliaQuest, LLC RELIAQUEST |
| AS72 | |
| AS286 | Kpn KPN |
| AS577 | Bacom BACOM |
| AS680 | Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. DFN |
| AS1257 | Tele2 Sverige AB SWIPNET |
| AS1267 | WIND TRE S.P.A. ASN-WINDTRE |
| AS1273 | IDDQD-AS CW |
| AS1828 | Unitas Global UNITAS |
| AS1836 | green.ch AG GREEN |
| AS1853 | ACONET ACOnet |
| AS2110 | Enet Communications LIMITED AS-BTIRE |
| AS2497 | Internet Initiative Japan Inc. IIJ |
| AS2516 | KDDI CORPORATION KDDI |
| AS2914 | NTT America, Inc. NTT-DATA-2914 |
| AS3303 | Swisscom (Schweiz) AG SWISSCOM |
| AS3333 | Reseaux IP Europeens Network Coordination Centre (RIPE NCC) RIPE-NCC-AS |
| AS3573 | Accenture LLP ACCENTURE |
| AS5091 | Stripe, Inc. STRIPE |
| AS5511 | Orange S.A. Opentransit |
| AS6057 | Administracion Nacional de Telecomunicaciones AS6057 |
| AS6461 | Zayo Bandwidth ZAYO-6461 |
| AS6730 | Sunrise GmbH SUNRISE |
| AS6830 | Liberty Global Europe Holding B.V. LibertyGlobal |
| AS6881 | NIX.CZ z.s.p.o. NIXCZ |
| AS7195 | EDGEUNO S.A.S AS7195 |
| AS7246 | Bristol-Myers Squibb Company BMS-AS |
| AS7734 | Toronto Dominion Bank TDBANK |
| AS8218 | Zayo Infrastructure France SA NEO-ASN |
| AS8220 | COLT Technology Services Group Limited COLT |
| AS8283 | Netwerkvereniging Coloclue COLOCLUE-AS |
| AS8447 | A1 Telekom Austria AG A1TELEKOM-AT |
| AS8590 | Bayerische |
| AS8881 | 1&1 Versatel GmbH VERSATEL |
| AS8903 | LYNTIA NETWORKS S.A. AS8903 |
| AS8968 | RETELIT-X S.R.L. BT-Italia |
| AS9009 | M247 Europe SRL M247 |
| AS9121 | TTNet |
| AS9498 | BHARTI Airtel Ltd. BBIL-AP |
| AS10780 | Pure Storage, INC. PURE-STORAGE |
| AS12257 | Dell, Inc. EMC-AS12257 |
| AS12298 | QIAGEN GmbH QIAGEN-AS |
| AS12331 | Audi AG AUDI-AS |
| AS12389 | PJSC Rostelecom ROSTELECOM-AS |
| AS12440 | Hughes Network Systems GmbH AS12440 |
| AS12734 | Stellantis Auto SAS FIAT-AS1 |
| AS13030 | Init7 (Switzerland) Ltd. INIT7 |
| AS13130 | Autostadt GmbH Autostadt |
| AS13205 | Telecommunications Limited British |
| AS14840 | BR.Digital Telecom AS14840 |
| AS14907 | Wikimedia Foundation Inc. WIKIMEDIA |
| AS15412 | Flag Telecom UK Limited FLAG-AS |
| AS15442 | Procter & Gamble Service GmbH PG-Europe |
| AS15466 | Commando Materieel en IT ASN-DTO |
| AS15518 | Circular Informationssysteme GmbH CIRC-AS |
| AS16839 | SERVICENOW, INC. SNC |
| AS19151 | BroadbandONE, LLC BBO-1 |
| AS20561 | Schaeffler Technologies AG & Co. KG AS20561-INA |
| AS20868 | ABB Information Systems Ltd ABB |
| AS21000 | Atos France SAS ATOS-AS |
| AS21320 | GEANT Vereniging GEANT_IAS_VRF |
| AS21433 | Accenture UK Limited AccentureFSSC |
| AS21489 | The North Atlantic Treaty Organization SHAPE-AS |
| AS22683 | Koninklijke Philips N.V. PHILIPS-INTERNET |
| AS24961 | WIIT AG MYLOC-AS |
| AS25049 | Shell Information Technology International B.V. STASCO-UK-AS |
| AS25261 | IBERIA LINEAS AEREAS DE ESPANA SOCIEDAD ANONIMA OPERADORA IBERIA |
| AS26380 | MasterCard Technologies LLC MASTER-7-AS |
| AS27311 | Biogen MA Inc AS27311 |
| AS28879 | CECONOMY AG SATURN-MEDIA-AS |
| AS29063 | Eviden Netherlands B.V. Atos-NL-AS |
| AS30614 | Dell, Inc. DELL-BLK |
| AS30781 | Free Pro SAS JAGUAR-AS |
| AS30864 | Elavon Financial Services DAC Elavon-Financial-Services-DAC_AS |
| AS31027 | GlobalConnect A/S GlobalConnect-AS31027 |
| AS31614 | European Central Bank ECB-AS |
| AS33873 | Arvato Systems GmbH arvato-systems-AS |
| AS34311 | LG CNS Europe B.V LG-AS |
| AS34460 | PHOENIX International Holdings GmbH PHOENIX-AS |
| AS35280 | F5 Networks SARL F5 |
| AS37100 | SEACOM Limited |
| AS37468 | Angola Cables |
| AS38191 | Infosys Technologies Ltd INFOSYS-AS |
| AS40126 | Molson Coors Beverage Company AS-MOLSONCOORS |
| AS40934 | Fortinet Inc. FORTINET |
| AS42708 | Glesys AB GLESYS |
| AS43033 | Telio Communications GmbH Telio-Communications-GmbH |
| AS43949 | Marsh Limited MMC |
| AS45489 | Sri Lanka Telecom PLC, GLobal Peering SLT-GLOBAL |
| AS48647 | Solvay SA SOLVAY |
| AS49544 | i3D.net B.V i3Dnet |
| AS50304 | Blix Solutions AS BLIX |
| AS51046 | Bringo Limited BRINGOIE |
| AS51466 | Bridgestone Europe NV Bridgestone-Europe-AS |
| AS51527 | Hyundai AutoEver Europe GmbH AUTOEVER-EUROPE |
| AS52320 | GlobeNet Cabos Submarinos Colombia, S.A.S. AS52320 |
| AS52873 | Softdados Telecomunicacoes AS52873 |
| AS55290 | Depository Trust & Clearing Corporation DTCC-CDZ-CVO |
| AS59724 | Elsevier Limited REED-ELSEVIER-EMEA-GCC |
| AS60068 | Datacamp Limited CDN77 |
| AS60112 | Clarins SAS Clarins-HQ |
| AS199524 | G-Core Labs S.A. GCORE |
| AS199541 | EUROCONTROL, the European Organisation for the Safety of Air Navigation EUROCONTROL-AS |
| AS200361 | CONCENTRIX SERVICES BULGARIA EOOD concentrix |
| AS202097 | IBERMUTUA |
| AS202666 | International Flavors & Fragrances I.F.F. (Nederland) B.V IFF_CPH |
| AS203990 | Accertify LLC acc_eu |
| AS206625 | Enterprise Holdings, Inc. EHI-AME-AS |
| AS208053 | Clarins SAS Clarins-HQ |
| AS212565 | Specsavers Optical Group Limited SPECSAVERS |
| AS262427 | Invista Net Provedor de Acesso Ltda AS262427 |
| AS263152 | MIGO TELECOM AS263152 |
| AS264479 | Turbozone Internet AS264479 |
| AS271253 | LINK BRASIL TELECOMUNICACOES LTDA AS271253 |
| AS394805 | ReliaQuest, LLC RELIAQUEST |
Upstream graph
Upstreams and their upstreams, from BGP pathsNetwork health
Grade B · 84/100| partly | Prefixes covered by valid ROAs 98 of 126 announced prefixes are RPKI valid, 28 have no ROA. |
19/25 |
| pass | No RPKI invalid announcements None of the announcements is RPKI invalid. |
10/10 |
| pass | Announces IPv6 40 IPv6 prefixes. |
15/15 |
| pass | More than one upstream 16 upstreams seen in BGP. |
10/10 |
| pass | Working abuse contact abuse@eu.bt.net is published. |
15/15 |
| fail | Publishes a geofeed No geofeed found. Without one, location databases have to guess. |
0/10 |
| pass | No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger. |
10/10 |
| pass | Registry record maintained Last changed 2026-03-18. |
5/5 |
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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Use rpki.svg instead of health.svg for the RPKI badge.
Routing changes
Last 30 days| 2026-10-04 13:01 UTC | Neighbour gone | AS8473 | downstream |
| 2026-10-04 13:01 UTC | Relationship changed | AS14840 | upstream to peer |
| 2026-10-04 13:01 UTC | New neighbour | AS8966 | downstream |
| 2026-10-04 13:01 UTC | New neighbour | AS58453 | downstream |
| 2026-10-04 13:01 UTC | New neighbour | AS5432 | downstream |
| 2026-10-04 13:01 UTC | New neighbour | AS3300 | downstream |
| 2026-10-04 13:01 UTC | New neighbour | AS24940 | downstream |
| 2026-10-04 13:01 UTC | New neighbour | AS16509 | downstream |
| 2026-10-04 13:01 UTC | Relationship changed | AS9498 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS9009 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS8881 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS8283 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS8220 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS8218 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS7195 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS6830 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS6730 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS6461 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS6057 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS60068 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS577 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS5511 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS50304 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS3303 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS30781 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS2914 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS286 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS2516 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS2497 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS24961 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS1836 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS13030 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS1273 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS1267 | upstream to peer |
| 2026-10-04 13:01 UTC | Relationship changed | AS1257 | upstream to peer |
| 2026-10-04 13:01 UTC | New prefix | 204.231.112.0/24 | |
| 2026-10-04 13:01 UTC | New prefix | 195.36.104.0/24 |
WHOIS
aut-num: AS5400 as-name: BT org: ORG-CNS3-RIPE remarks: --------------------------------------------- remarks: Upstreams: remarks: --------------------------------------------- remarks: --------------------------------------------- remarks: Peers: remarks: --------------------------------------------- admin-c: CIA1-RIPE tech-c: BS1836-RIPE status: ASSIGNED mnt-by: RIPE-NCC-END-MNT remarks: remarks: ALL peering requests see remarks: www.bt.net/cgi-bin/peering-request remarks: remarks: for technical issues, pls contact: peering@bt.com remarks: remarks: for abuse, pls contact abuse@eu.bt.net remarks: remarks: 24/7 NOC email / network@bt.com remarks: 24/7 NOC phone / +44 203 7882214 opt 1 remarks: remarks: This object describes non-customer peerings remarks: Customer peerings are described in the macro AS-BT-XX remarks: (replace XX with the country code NL, UK, BE, IE,etc) remarks: remarks: Communities scheme: remarks: The following BGP communities can be set by BT remarks: BGP customers to affect announcements to major peers. remarks: remarks: ****************************************************** remarks: remarks: 5400:NXXX remarks: N=1 not announce remarks: N=2 prepend an extra "5400 5400" on announcement remarks: Valid values for XXX: remarks: 000 All peers and transits remarks: 500 All transits remarks: 503 Colt AS3356 remarks: 509 Arelion AS1299 remarks: 002 Sprint AS1239 remarks: 004 Vodafone Global Network AS1273 remarks: 005 Verizon EMEA AS702 remarks: 014 DTAG AS3320 remarks: 016 Orange AS5511 remarks: 018 Tata Communications Ltd AS6453 remarks: 023 GTT Communications AS3257 remarks: 045 Telecom Italia Sparkle AS6762 remarks: 073 GTT Communications AS286 remarks: 169 Cogent AS174 remarks: 177 Telxius Cable AS12956 remarks: 177 Telefonica Germany GmbH AS6805 remarks: 190 Comcast AS7922 remarks: 191 Highwinds Network Group AS12989 remarks: 300 All other peers remarks: ------------------------------------------------------ remarks: remarks: AS5400 is matching RPKI validation state and reject remarks: invalid prefixes from peers and customers. remarks: remarks: Our looking-glass marks validation state for all remarks: prefixes : http://www.bt.net/looking-glass.html remarks: remarks: Please review your registered ROAs to reduce number remarks: of invalid prefixes. remarks: remarks: ------------------------------------------------------ mnt-by: CIP-MNT created: 2002-08-29T09:47:11Z last-modified: 2026-03-18T06:09:10Z source: RIPE % 400 routing policy lines (import/export) not shown