AS5400
British Telecommunications PLC
CAIDA
Primary org cluster
BT
281
Announced prefixes
50
RPKI-authorized prefixes

Prefixes

showing 1–100 of 281
CIDR Org name Source Confidence
27.111.231.53/32 BT PEERINGDB 1.00
27.111.231.55/32 BT PEERINGDB 1.00
31.95.0.0/21 British Telecommunications PLC BGP 1.00
31.95.14.0/23 British Telecommunications PLC BGP 1.00
31.95.16.0/20 British Telecommunications PLC BGP 1.00
31.95.48.0/21 British Telecommunications PLC BGP 1.00
31.95.56.0/24 British Telecommunications PLC BGP 1.00
31.95.96.0/19 British Telecommunications PLC BGP 1.00
31.95.160.0/20 British Telecommunications PLC BGP 1.00
31.95.184.0/21 British Telecommunications PLC BGP 1.00
31.95.208.0/21 British Telecommunications PLC BGP 1.00
31.95.218.0/23 British Telecommunications PLC BGP 1.00
31.95.220.0/22 British Telecommunications PLC BGP 1.00
36.255.56.119/32 BT PEERINGDB 1.00
36.255.57.197/32 BT PEERINGDB 1.00
37.49.232.34/32 BT PEERINGDB 1.00
37.49.232.87/32 BT PEERINGDB 1.00
37.49.237.2/32 BT PEERINGDB 1.00
37.49.238.190/32 BT PEERINGDB 1.00
37.49.238.196/32 BT PEERINGDB 1.00
45.68.80.86/32 BT PEERINGDB 1.00
46.248.8.0/23 British Telecommunications PLC BGP 1.00
46.248.10.0/23 British Telecommunications PLC BGP 1.00
62.5.0.0/17 British Telecommunications PLC BGP 1.00
62.102.0.0/17 British Telecommunications PLC BGP 1.00
62.134.0.0/16 British Telecommunications PLC BGP 1.00
62.172.0.0/21 British Telecommunications PLC BGP 1.00
62.173.192.0/18 British Telecommunications PLC BGP 1.00
62.180.0.0/16 British Telecommunications PLC BGP 1.00
80.81.193.84/32 BT PEERINGDB 1.00
80.81.196.97/32 BT PEERINGDB 1.00
80.81.196.177/32 BT PEERINGDB 1.00
80.249.208.108/32 BT PEERINGDB 1.00
80.249.215.8/32 BT PEERINGDB 1.00
80.255.160.0/24 British Telecommunications PLC BGP 1.00
80.255.160.0/20 British Telecommunications PLC BGP 1.00
80.255.161.0/24 British Telecommunications PLC BGP 1.00
80.255.162.0/24 British Telecommunications PLC BGP 1.00
82.138.160.0/19 British Telecommunications PLC BGP 1.00
82.150.0.0/19 British Telecommunications PLC BGP 1.00
91.206.52.138/32 BT PEERINGDB 1.00
91.206.52.174/32 BT PEERINGDB 1.00
91.210.16.40/32 BT PEERINGDB 1.00
101.203.90.173/32 BT PEERINGDB 1.00
101.203.90.174/32 BT PEERINGDB 1.00
103.246.232.137/32 BT PEERINGDB 1.00
103.246.232.138/32 BT PEERINGDB 1.00
123.255.90.46/32 BT PEERINGDB 1.00
123.255.90.47/32 BT PEERINGDB 1.00
132.244.64.0/21 British Telecommunications PLC BGP 1.00
132.244.72.0/21 British Telecommunications PLC BGP 1.00
132.244.240.0/24 British Telecommunications PLC BGP 1.00
136.238.84.0/24 British Telecommunications PLC BGP 1.00
136.238.85.0/24 British Telecommunications PLC BGP 1.00
136.238.224.0/24 British Telecommunications PLC BGP 1.00
166.49.128.0/17 British Telecommunications PLC BGP 1.00
185.1.47.45/32 BT PEERINGDB 1.00
185.1.47.94/32 BT PEERINGDB 1.00
185.1.55.62/32 BT PEERINGDB 1.00
185.1.86.32/32 BT PEERINGDB 1.00
185.1.112.118/32 BT PEERINGDB 1.00
185.1.170.6/32 BT PEERINGDB 1.00
185.1.192.60/32 BT PEERINGDB 1.00
185.1.192.141/32 BT PEERINGDB 1.00
185.1.208.35/32 BT PEERINGDB 1.00
185.1.208.83/32 BT PEERINGDB 1.00
185.6.36.116/32 BT PEERINGDB 1.00
185.6.36.191/32 BT PEERINGDB 1.00
185.6.36.192/32 BT PEERINGDB 1.00
185.94.0.0/22 British Telecommunications PLC BGP 1.00
185.249.4.0/24 British Telecommunications PLC BGP 1.00
187.16.214.171/32 BT PEERINGDB 1.00
187.16.217.237/32 BT PEERINGDB 1.00
188.93.170.69/32 BT PEERINGDB 1.00
192.38.7.14/32 BT PEERINGDB 1.00
192.109.52.0/24 British Telecommunications PLC BGP 1.00
193.58.130.0/23 British Telecommunications PLC BGP 1.00
193.110.226.12/32 BT PEERINGDB 1.00
193.149.1.43/32 BT PEERINGDB 1.00
193.188.137.53/32 BT PEERINGDB 1.00
193.202.26.0/24 British Telecommunications PLC BGP 1.00
193.203.0.229/32 BT PEERINGDB 1.00
194.33.53.0/24 British Telecommunications PLC BGP 1.00
194.33.54.0/24 British Telecommunications PLC BGP 1.00
194.33.55.0/24 British Telecommunications PLC BGP 1.00
194.50.160.0/24 British Telecommunications PLC BGP 1.00
194.53.172.99/32 BT PEERINGDB 1.00
194.53.172.112/32 BT PEERINGDB 1.00
194.68.123.109/32 BT PEERINGDB 1.00
194.68.128.109/32 BT PEERINGDB 1.00
194.74.80.0/21 British Telecommunications PLC BGP 1.00
194.76.40.0/24 British Telecommunications PLC BGP 1.00
194.107.114.0/24 British Telecommunications PLC BGP 1.00
194.213.64.0/19 British Telecommunications PLC BGP 1.00
195.36.82.0/24 British Telecommunications PLC BGP 1.00
195.42.144.212/32 BT PEERINGDB 1.00
195.60.182.0/24 British Telecommunications PLC BGP 1.00
195.60.183.0/24 British Telecommunications PLC BGP 1.00
195.66.70.0/24 British Telecommunications PLC BGP 1.00
195.66.224.108/32 BT PEERINGDB 1.00
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RPKI-authorized prefixes (ROAs)

what's this?
23.230.16.0/24 /24 max
31.95.0.0/16 /16 max
31.95.0.0/21 /21 max
31.95.14.0/23 /23 max
31.95.16.0/20 /20 max
31.95.48.0/21 /21 max
31.95.56.0/24 /24 max
31.95.58.0/23 /23 max
31.95.64.0/21 /21 max
31.95.72.0/22 /22 max
31.95.80.0/22 /22 max
31.95.96.0/19 /19 max
31.95.128.0/20 /20 max
31.95.160.0/20 /20 max
31.95.176.0/22 /22 max
31.95.184.0/21 /21 max
31.95.208.0/21 /21 max
31.95.218.0/23 /23 max
31.95.220.0/22 /22 max
31.95.228.0/22 /22 max
31.95.232.0/22 /22 max
31.95.238.0/23 /23 max
31.95.240.0/22 /22 max
31.95.246.0/23 /23 max
31.95.248.0/22 /22 max
31.95.254.0/23 /23 max
45.39.136.0/24 /24 max
62.5.0.0/17 /17 max
62.102.0.0/17 /17 max
62.134.0.0/16 /16 max
62.172.0.0/21 /21 max
62.173.192.0/18 /18 max
62.180.0.0/16 /16 max
77.72.239.0/24 /24 max
82.150.0.0/19 /19 max
91.142.128.0/24 /24 max
130.41.240.0/24 /24 max
130.41.241.0/24 /24 max
166.49.128.0/17 /17 max
166.49.171.0/24 /24 max
166.49.253.0/24 /24 max
185.68.200.0/22 /22 max
185.94.0.0/22 /22 max
192.109.52.0/24 /24 max
193.202.26.0/24 /24 max
194.74.80.0/21 /21 max
194.213.64.0/19 /19 max
195.90.64.0/19 /19 max
195.99.64.0/20 /20 max
195.100.0.0/16 /16 max

Uses the REST API.