// ASN
AS5400
BT - British Telecommunications Limited, GB
Detailed information about the Autonomous System. Need another one? Look up a different ASN.
- ASN
- AS5400
- Organization
- BT Global Fabric Customers
- Description
- BT - British Telecommunications Limited, GB
- Country
- PL
- Registry (RIR)
- RIPE
- Created
- 2010-10-03
- Updated
- 2026-02-23
- IPv4 Prefixes
- 84
- IPv6 Prefixes
- 40
IPv4 Prefixes
84 total · showing first 10132.244.240.0/24 132.244.64.0/21 132.244.72.0/21 136.238.224.0/24 136.238.84.0/24 136.238.85.0/24 166.49.128.0/17 185.249.4.0/24 185.94.0.0/22 192.109.52.0/24
IPv6 Prefixes
40 total · showing first 102001:740::/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
What is AS5400?
AS5400 is an Autonomous System Number (ASN) assigned to BT Global Fabric Customers. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.
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