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AS3300

British Telecommunications Limited

AS3300 is British Telecommunications Limited (bt.net). It announces 513,024 IPv4 addresses in 123 prefixes, and 29 IPv6 prefixes.

United Kingdom· RIPE· allocated 1994-10-28· isp

513,024
IPv4 addresses announced
123
IPv4 prefixes
29
IPv6 prefixes
71.05%
of its routes RPKI-valid
513,024
of its IPv4 geolocated
56
countries

Where its space is

The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.

top 12 of 56
  1. United States286,517 · 55.85%
  2. United Kingdom29,488 · 5.75%
  3. Germany18,864 · 3.68%
  4. Singapore16,560 · 3.23%
  5. Japan13,592 · 2.65%
  6. France12,680 · 2.47%
  7. Italy12,272 · 2.39%
  8. Belgium10,976 · 2.14%
  9. Hong Kong10,952 · 2.13%
  10. Switzerland9,192 · 1.79%
  11. The Netherlands8,672 · 1.69%
  12. Australia8,288 · 1.62%

Registry record

Its ASN Whois record, as the registry publishes it.

handle
BT
name
British Telecommunications Limited
org
ORG-CNS3-RIPE
org name
British Telecommunications Limited
org address
Pritech Park SEZ, Bellandur village, Varthur Hob, KA 560103, Bengaluru, INDIA
org country
GB
country
GB
source
ripe
status
ASSIGNED
created
2002-09-19
updated
2026-05-05
remarks
Upstreams: / Peers: / ALL peering requests see / www.bt.net/cgi-bin/peering-request / for technical issues, pls contact: peering@bt.com / for abuse, pls contact abuse@eu.bt.net / 24/7 NOC email / network@bt.com / 24/7 NOC phone / +44 203 7882214 opt 1 / This object describes non-customer peerings / Customer peerings are described in the macro AS-BT-XX / ( replace XX with the country code / JP, AU, HK, SG, JP, ZA, US, CALA ) / The following BGP communities are available to customers / to AS prepend their pre
maintainer
RIPE-NCC-END-MNT|CIP-MNT
abuse name
Abuse-C Role
abuse email
abuse@eu.bt.net
abuse kind
role

What the databases see

Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.

IPv4 prefixes

Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.

123 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
61.14.0.0/18United Statesvalid172026-10-02
61.14.1.0/24Australiavalid172026-10-02
61.14.2.0/23Hong Kongvalid172026-10-02
61.14.4.0/22Hong Kongvalid172026-10-02
61.14.7.0/24Hong Kongvalid172026-10-02
61.14.8.0/22Japanvalid172026-10-02
61.14.11.0/24Japanvalid172026-10-02
61.14.12.0/22Australiavalid172026-10-02
61.14.15.0/24Australiavalid172026-10-02
61.14.20.0/22Australiavalid172026-10-02
61.14.24.0/22Hong Kongvalid172026-10-02
61.14.28.0/22Singaporevalid172026-10-02
61.14.31.0/24Singaporevalid172026-10-02
61.14.32.0/22Singaporevalid172026-10-02
61.14.34.0/24Singaporevalid172026-10-02
61.14.36.0/22Japanvalid172026-10-02
61.14.36.0/24Japanvalid172026-10-02
61.14.39.0/24Japanvalid172026-10-02
61.14.40.0/22South Africavalid172026-10-02
61.14.44.0/22South Africavalid172026-10-02
61.14.48.0/22South Africavalid172026-10-02
61.14.52.0/24Hong Kongvalid172026-10-02
63.250.128.0/18United Statesvalid172026-10-02
63.250.128.0/22United Statesvalid172026-10-02
63.250.131.0/24United Statesvalid172026-10-02
63.250.132.0/22United Statesvalid172026-10-02
63.250.132.0/24United Statesvalid172026-10-02
63.250.135.0/24United Statesvalid172026-10-02
63.250.136.0/23United Statesvalid172026-10-02
63.250.138.0/24Brazilvalid172026-10-02
63.250.139.0/24United Statesvalid172026-10-02
63.250.140.0/22United Statesvalid172026-10-02
63.250.144.0/22Brazilvalid172026-10-02
63.250.144.0/24Brazilvalid172026-10-02
63.250.147.0/24Brazilvalid172026-10-02
63.250.148.0/22United Statesvalid172026-10-02
63.250.151.0/24United Statesvalid172026-10-02
63.250.152.0/22United Statesvalid172026-10-02
63.250.155.0/24United Statesvalid172026-10-02
63.250.156.0/22United Statesvalid172026-10-02
63.250.159.0/24United Statesvalid172026-10-02
63.250.160.0/22Canadavalid172026-10-02
63.250.163.0/24Canadavalid172026-10-02
63.250.164.0/24United Statesvalid172026-10-02
63.250.165.0/24United Statesvalid172026-10-02
63.250.168.0/22United Statesvalid172026-10-02
63.250.171.0/24United Statesvalid172026-10-02
63.250.172.0/24United Statesvalid172026-10-02
63.250.173.0/24Brazilvalid172026-10-02
63.250.174.0/24United Statesvalid172026-10-02
63.250.176.0/22United Statesvalid172026-10-02
63.250.180.0/22United Statesvalid172026-10-02
63.250.184.0/22United Statesvalid172026-10-02
63.250.187.0/24United Statesvalid172026-10-02
63.250.189.0/24Brazilvalid172026-10-02
63.250.191.0/24United Statesvalid172026-10-02
72.29.128.0/20United Statesvalid172026-10-02
72.29.132.0/22United Statesvalid172026-10-02
136.238.168.0/24Switzerlandnot found172026-10-02
136.238.185.0/24Switzerlandnot found172026-10-02
136.238.187.0/24Switzerlandnot found172026-10-02
136.238.229.0/24Switzerlandnot found172026-10-02
136.238.232.0/24Switzerlandnot found172026-10-02
136.238.238.0/24Switzerlandnot found172026-10-02
136.238.239.0/24Switzerlandnot found172026-10-02
136.238.240.0/24Switzerlandnot found172026-10-02
136.238.241.0/24Switzerlandnot found172026-10-02
136.238.243.0/24Switzerlandnot found172026-10-02
185.249.5.0/24United Statesnot found172026-10-02
185.249.6.0/24Singaporenot found172026-10-02
192.92.18.0/24United Statesnot found172026-10-02
192.92.19.0/24Singaporenot found172026-10-02
192.92.20.0/22United Statesvalid172026-10-02
192.92.24.0/21United Statesvalid172026-10-02
192.92.32.0/19United Statesvalid172026-10-02
192.92.80.0/23United Statesvalid172026-10-02
192.92.82.0/24United Statesvalid172026-10-02
192.157.130.0/23United Statesvalid172026-10-02
192.157.132.0/22United Statesvalid172026-10-02
192.157.136.0/21United Statesvalid172026-10-02
192.157.144.0/20Canadavalid172026-10-02
192.157.160.0/23United Statesvalid172026-10-02
192.237.64.0/18United Statesvalid172026-10-02
194.33.52.0/24United Kingdomnot found172026-10-02
195.206.69.0/24The Netherlandsvalid172026-10-02
195.206.70.0/24The Netherlandsvalid172026-10-02
198.137.75.0/24United Statesnot found172026-10-02
198.178.237.0/24United Statesnot found172026-10-02
198.178.239.0/24United Statesnot found172026-10-02
198.207.64.0/18United Statesvalid172026-10-02
198.207.64.0/22United Statesvalid172026-10-02
198.207.67.0/24United Statesvalid172026-10-02
198.207.68.0/22United Statesvalid172026-10-02
198.207.72.0/22United Statesvalid172026-10-02
198.207.74.0/24United Statesvalid172026-10-02
198.207.75.0/24United Statesvalid172026-10-02
198.207.76.0/22United Statesvalid172026-10-02
198.207.78.0/24United Statesvalid172026-10-02
198.207.79.0/24United Statesvalid172026-10-02
198.207.80.0/22Germanyvalid172026-10-02
198.207.127.0/24United Statesvalid172026-10-02
199.6.64.0/18United Kingdomvalid172026-10-02
203.187.128.0/19Singaporevalid172026-10-02
203.187.128.0/22Singaporevalid172026-10-02
203.187.145.0/24Hong Kongvalid172026-10-02
203.187.146.0/24Australiavalid172026-10-02
204.52.187.0/24United Statesnot found172026-10-02
204.79.84.0/24United Statesnot found172026-10-02
204.140.64.0/18United Statesvalid172026-10-02
204.231.0.0/17United Statesvalid172026-10-02
204.231.128.0/18United Statesvalid172026-10-02
205.248.0.0/16Singaporevalid172026-10-02
206.182.0.0/16United Kingdomvalid172026-10-02
206.182.128.0/18United Statesvalid172026-10-02
206.182.134.0/24United Statesvalid172026-10-02
206.182.164.0/24United Statesvalid172026-10-02
206.182.192.0/18United Statesvalid172026-10-02
207.117.0.0/16Japannot found172026-10-02
207.209.0.0/16United Kingdomnot found172026-10-02
207.209.0.0/19United Kingdomnot found172026-10-02
207.209.64.0/19Irelandnot found172026-10-02
209.28.0.0/16United Statesvalid172026-10-02
209.28.174.0/24United Statesvalid172026-10-02

IPv6 prefixes

Every IPv6 prefix BGP Route saw it announce.

29 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
2402:fb00::/32United Statesvalid202026-10-02
2402:fb00::/36United Statesvalid202026-10-02
2402:fb00:f00::/40United Statesvalid202026-10-02
2402:fb00:1000::/36United Statesvalid202026-10-02
2402:fb00:1f00::/40Singaporevalid202026-10-02
2402:fb00:2000::/36United Statesvalid202026-10-02
2402:fb00:2f00::/40United Statesvalid202026-10-02
2402:fb00:3000::/36United Statesvalid202026-10-02
2402:fb00:3f00::/40United Statesvalid202026-10-02
2606:f100::/32United Statesnot found202026-10-02
2606:f100::/36United Statesnot found202026-10-02
2606:f100:f00::/40United Statesnot found202026-10-02
2606:f100:1000::/36United Statesnot found202026-10-02
2606:f100:1f00::/40United Statesnot found202026-10-02
2606:f100:2000::/36United Statesnot found202026-10-02
2606:f100:2f00::/40United Statesnot found202026-10-02
2606:f100:3000::/36United Statesnot found202026-10-02
2606:f100:3f00::/40United Statesnot found202026-10-02
2606:f100:4000::/36United Statesnot found202026-10-02
2606:f100:4f00::/40United Statesnot found202026-10-02
2606:f100:5000::/36United Statesnot found202026-10-02
2606:f100:5f00::/40United Statesnot found202026-10-02
2606:f100:6000::/36United Statesnot found202026-10-02
2606:f100:7000::/36United Statesnot found202026-10-02
2606:f100:7f00::/40United Statesnot found202026-10-02
2606:f100:8000::/36United Statesnot found202026-10-02
2606:f100:8f00::/40United Statesnot found202026-10-02
2606:f100:9000::/36United Statesnot found202026-10-02
2606:f100:c000::/36United Statesnot found202026-10-02
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