// ASN

AS5400

BT - British Telecommunications Limited, GB

Detailed information about the Autonomous System. Need another one? Look up a different ASN.

ASN: AS5400
Description: BT - British Telecommunications Limited, GB
IPv4 Prefixes: 80
IPv6 Prefixes: 34

IPv4 Prefixes

80 total · showing first 10

132.244.240.0/24
132.244.64.0/21
132.244.72.0/21
136.238.224.0/24
136.238.84.0/24
136.238.85.0/24
166.49.128.0/17
185.249.4.0/24
185.94.0.0/22
192.109.52.0/24

IPv6 Prefixes

34 total · showing first 10

2001:740::/32
2402:fb00:8000::/39
2402:fb00:8400::/39
2402:fb00:8800::/40
2402:fb00:c000::/39
2606:f100:d000::/39
2606:f100:d400::/39
2606:f100:d600::/39
2606:f100:d800::/38
2606:f100:dc00::/38

What is AS5400?

AS5400 is an Autonomous System Number (ASN) assigned to BT - British Telecommunications Limited, GB. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.

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