AS5400 · British Telecommunications Limited

86
IPv4 prefixes
734,720
IPv4 addresses
40
IPv6 prefixes
🇬🇧 GB
Country

Summary

AS number
AS5400
Name
British Telecommunications Limited
Country
🇬🇧 United Kingdom
Type
RIPE
Category
isp
Announced
126 prefixes
Updated
2026-08-26

Announced IPv4 prefixes (86)

Prefix
8.12.61.0/24
31.95.0.0/21
31.95.14.0/23
31.95.16.0/20
31.95.48.0/21
31.95.56.0/24
31.95.64.0/21
31.95.96.0/19
31.95.160.0/20
31.95.184.0/21
31.95.208.0/21
31.95.218.0/23
31.95.220.0/22
31.95.240.0/22
31.95.246.0/23
31.95.248.0/22
31.95.254.0/23
46.248.8.0/23
46.248.10.0/23
62.5.0.0/17
62.102.0.0/17
62.134.0.0/16
62.172.0.0/21
62.173.192.0/18
62.180.0.0/16
80.255.160.0/20
80.255.160.0/24
80.255.161.0/24
80.255.162.0/24
82.138.160.0/19
82.150.0.0/19
132.244.64.0/21
132.244.72.0/21
132.244.240.0/24
136.238.84.0/24
136.238.85.0/24
136.238.224.0/24
166.49.128.0/17
185.94.0.0/22
185.249.4.0/24
192.109.52.0/24
193.58.130.0/23
193.202.26.0/24
194.33.53.0/24
194.33.54.0/24
194.33.55.0/24
194.50.160.0/24
194.74.80.0/21
194.76.40.0/24
194.107.114.0/24
194.213.64.0/19
195.36.82.0/24
195.60.182.0/24
195.60.183.0/24
195.66.70.0/24
195.90.64.0/19
195.99.64.0/20
195.100.0.0/16
195.163.0.0/16
195.171.36.0/22
195.182.96.0/19
198.178.236.0/24
203.158.68.0/23
203.158.72.0/23
203.158.76.0/23
203.158.88.0/24
203.158.89.0/24
204.52.188.0/24
206.73.0.0/16
206.73.0.0/19
206.73.48.0/20
206.73.80.0/20
206.73.112.0/22
206.73.116.0/22
206.73.156.0/22
212.8.160.0/19
212.21.192.0/19
212.31.192.0/19
212.41.128.0/19
212.108.0.0/19
212.127.0.0/19
212.162.192.0/18
213.15.0.0/16
213.137.160.0/19
213.194.0.0/18
213.236.64.0/18

Announced IPv6 prefixes (40)

Prefix
2001:740::/32
2402:fb00:8000::/39
2402:fb00:8400::/39
2402:fb00:8800::/40
2402:fb00:c000::/39
2402:fb00:c200::/39
2606:f100:d000::/39
2606:f100:d400::/39
2606:f100:d600::/39
2606:f100:d800::/38
2606:f100:dc00::/38
2606:f100:e400::/39
2a00:2000::/23
2a00:2080::/32
2a00:2081::/32
2a00:2082::/32
2a00:2083::/32
2a00:2084::/32
2a00:2086::/32
2a00:2089::/32
2a00:208a::/32
2a00:208b::/32
2a00:208c::/32
2a00:208d::/32
2a00:2090::/32
2a00:2094::/32
2a00:2095::/32
2a00:2096::/32
2a00:2097::/32
2a00:2200::/25
2a00:2200:200::/40
2a00:2200:300::/40
2a00:2200:900::/40
2a00:2200:b00::/40
2a00:2200:d00::/40
2a00:2200:2000::/40
2a00:2200:5300::/40
2a00:2280::/25
2a00:2300::/25
2a0c:7c80::/29