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AS5400 · British Telecommunications

United KingdomCarrier

British Telecommunications (International)

British Telecommunications announces 85 IPv4 prefixes (714.2K addresses) and 40 IPv6 prefixes from the United Kingdom. 78% of them are covered by valid RPKI records.

Prefixes

85 · 40

IPv4 · IPv6

Address space

714.2K

IPv4 addresses · 59.3M IPv6 /48s

RPKI

78% valid

0 invalid · 28 without a record

Peering

Restrictive

61 exchanges · 141 facilities

Where it is

138 facilities with known locations (of 141)

Details

Network

Name
British Telecommunications (International)
Holder
CIP-MNT
Type
NSP
Country
United KingdomUnited Kingdom
Registry
RIPE NCC
Registered
Aug 29, 200224 years ago
Website
bt.net
Traffic
1-5Tbps
UsersCloudflare Radar's estimate of people who reach the internet through this network.
About 5.1K
Abuse contact
abuse@eu.bt.net

Routing security

ASPAAn RPKI record listing the only networks allowed to be its upstream providers, so routers can reject leaked or forged paths.
Not published
RPKI coverageShare of its announcements that a signed record (ROA) authorizes.
97 of 125 valid
IncidentsPossible BGP hijacks (high-confidence detections) and route leaks involving this network in the last 30 days, from Cloudflare Radar.
None in 30 days

AS5400 on Cloudflare Radar →PeeringDB →

Largest prefixes

125 announcements in all

IPv4

85
  1. 62.134.0.0/16RPKI valid
  2. 62.180.0.0/16RPKI valid
  3. 195.100.0.0/16RPKI valid
  4. 195.163.0.0/16RPKI valid
  5. 206.73.0.0/16RPKI valid
  6. 213.15.0.0/16RPKI valid
  7. 62.5.0.0/17RPKI valid
  8. 62.102.0.0/17RPKI valid
  9. 166.49.128.0/17RPKI valid
  10. 62.173.192.0/18RPKI valid
  11. 212.162.192.0/18RPKI valid
  12. 213.194.0.0/18RPKI valid
  13. 213.236.64.0/18RPKI valid
  14. 31.95.96.0/19RPKI valid
  15. 82.138.160.0/19No ROA
  16. 82.150.0.0/19RPKI valid
  17. 194.213.64.0/19RPKI valid
  18. 195.90.64.0/19RPKI valid
  19. 195.182.96.0/19RPKI valid
  20. 206.73.0.0/19RPKI valid
  21. 212.8.160.0/19RPKI valid
  22. 212.21.192.0/19RPKI valid
  23. 212.31.192.0/19RPKI valid
  24. 212.41.128.0/19RPKI valid

Internet exchanges

Largest 60 of 61, by port speed

  1. AMS-IXNetherlandsAmsterdam500 Gbps
  2. LINX LON1United KingdomLondon300 Gbps
  3. DE-CIX FrankfurtGermanyFrankfurt300 Gbps
  4. Equinix AshburnUnited StatesAshburn220 Gbps
  5. MIX-ITItalyMilan220 Gbps
  6. INEX LAN1IrelandDublin220 Gbps
  7. Netnod Stockholm GREEN -- MTU1500SwedenStockholm210 Gbps
  8. Netnod Stockholm BLUE -- MTU1500SwedenStockholm210 Gbps
  9. NYIIX New YorkUnited StatesNew York210 Gbps
  10. France-IX ParisFranceParis210 Gbps
  11. Equinix WarsawPolandWarsaw210 Gbps
  12. VIXAustriaVienna201 Gbps
  13. France-IX MarseilleFranceMarseille200 Gbps
  14. Equinix Hong KongHong KongHong Kong200 Gbps
  15. DE-CIX MadridSpainMadrid200 Gbps
  16. IX.br (PTT.br) Rio de JaneiroBrazilRio de Janeiro/RJ200 Gbps
  17. DE-CIX MunichGermanyMunich200 Gbps
  18. DE-CIX DusseldorfGermanyDüsseldorf200 Gbps
  19. HKIXHong KongHong Kong200 Gbps
  20. DE-CIX LisbonPortugalLisbon200 Gbps
  21. DE-CIX MarseilleFranceMarseille200 Gbps
  22. Equinix MiamiUnited StatesMiami200 Gbps
  23. BBIX TokyoJapanTokyo200 Gbps
  24. Equinix TokyoJapanTokyo200 Gbps
  25. Equinix SingaporeSingaporeSingapore200 Gbps
  26. BBIX OsakaJapanOsaka200 Gbps
  27. JPIX OSAKAJapanOsaka200 Gbps
  28. TorIXCanadaToronto200 Gbps
  29. IX.br (PTT.br) São PauloBrazilSão Paulo/SP200 Gbps
  30. VANIXCanadaVancouver200 Gbps
  31. CANIX MontrealCanadaMontreal200 Gbps
  32. France-IX AURAFranceLyon and Grenoble200 Gbps
  33. Netnod Copenhagen GREEN -- MTU9KDenmarkMalmo / Copenhagen200 Gbps
  34. Netnod Copenhagen BLUE -- MTU9KDenmarkMalmo / Copenhagen200 Gbps
  35. BNIXBelgiumBrussels140 Gbps
  36. NIX1NorwayOslo110 Gbps
  37. LU-CIXLuxembourgLuxembourg110 Gbps
  38. Equinix HelsinkiFinlandHelsinki110 Gbps
  39. Equinix ChicagoUnited StatesChicago100 Gbps
  40. Equinix San JoseUnited StatesSan Jose100 Gbps
  41. LINX LON2United KingdomLondon100 Gbps
  42. Equinix ParisFranceParis100 Gbps
  43. SwissIXSwitzerlandZurich100 Gbps
  44. Equinix DallasUnited StatesDallas100 Gbps
  45. Any2WestUnited StatesLos Angeles and Silicon Valley100 Gbps
  46. MegaIX MelbourneAustraliaMelbourne100 Gbps
  47. Equinix AmsterdamNetherlandsAmsterdam100 Gbps
  48. Equinix Los AngelesUnited StatesLos Angeles100 Gbps
  49. Equinix New YorkUnited StatesNew York100 Gbps
  50. Equinix AtlantaUnited StatesAtlanta100 Gbps
  51. Digital Realty AtlantaUnited StatesAtlanta100 Gbps
  52. NL-ixNetherlandsAmsterdam, Rotterdam, Brussels, Luxembourg, Frankfurt, Düsseldorf, Berlin, Dublin, London, Copenhagen, Paris, Marseille100 Gbps
  53. CATNIXSpainBarcelona100 Gbps
  54. BCIXGermanyBerlin100 Gbps
  55. SIX SeattleUnited StatesSeattle100 Gbps
  56. Any2DenverUnited StatesDenver20 Gbps
  57. ESpanix Madrid Lower LANSpainMadrid10 Gbps
  58. NIX.CZCzechiaPrague10 Gbps
  59. DIXDenmarkCopenhagen10 Gbps
  60. FICIX 1 (Espoo)FinlandEspoo10 Gbps