AS5400 British Telecommunications (International) 🇬🇧 GB
British Telecommunications Limited. Announcing 126 prefixes, seen at the RIS collectors.
IPv4 prefixes
86
734,480 (2,869 × /24)
IPv6 prefixes
40
921 × /32
Upstreams
5
transit providers observed
Peers
20
settlement-free adjacencies
Downstreams
62
transit customers observed
Customer cone
321
ASes reachable through it
Registry and operator data
- AS number
- AS5400
- Name
- British Telecommunications (International)
- Organisation
- BT
- Country
- 🇬🇧 GB
- RIR
- RIPENCC
- Allocated
- 1995-08-15
- Network type
- NSP
- Traffic levels
- 1-5Tbps
- Scope
- Europe
- Peering policy
- Restrictive
- IRR as-set
- AS-BT-EU
- Website
- http://www.bt.net
- Looking glass
- http://lg.bt.net/
- PeeringDB
- net/118
- Exchanges
- 61
- Facilities
- 141
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
86 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 31.95.0.0/21 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.14.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.16.0/20 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.48.0/21 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.56.0/24 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.64.0/21 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.96.0/19 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.160.0/20 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.184.0/21 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.208.0/21 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.218.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.220.0/22 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.240.0/22 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.246.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.248.0/22 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 31.95.254.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 46.248.8.0/23 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 46.248.10.0/23 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 62.5.0.0/17 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 62.102.0.0/17 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 62.134.0.0/16 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 62.134.94.48/28 v4 | RPKI invalid | 1 | 503045400 | 2026-10-19 |
| 62.172.0.0/21 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 62.173.192.0/18 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 62.180.0.0/16 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 80.255.160.0/20 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 80.255.160.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 80.255.161.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 80.255.162.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 82.138.160.0/19 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 82.150.0.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 132.244.64.0/21 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 132.244.72.0/21 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 132.244.240.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 136.238.84.0/24 v4 | no ROA | 43 | 33335400 | 2026-09-18 |
| 136.238.85.0/24 v4 | no ROA | 43 | 33335400 | 2026-09-18 |
| 136.238.224.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 166.49.128.0/17 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 185.94.0.0/22 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 185.249.4.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 192.109.52.0/24 v4 | RPKI valid | 41 | 33335400 | 2026-09-18 |
| 193.58.130.0/23 v4 | no ROA | 41 | 503045400 | 2026-09-18 |
| 194.33.53.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 194.33.54.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 194.33.55.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 194.50.160.0/24 v4 | no ROA | 43 | 33335400 | 2026-09-18 |
| 194.74.80.0/21 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 194.76.40.0/24 v4 | no ROA | 43 | 33335400 | 2026-09-18 |
| 194.107.114.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 194.213.64.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 195.36.82.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 195.36.104.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 195.60.182.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 195.60.183.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 195.66.70.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 195.90.64.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 195.99.64.0/20 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 195.100.0.0/16 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 195.163.0.0/16 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 195.171.36.0/22 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 195.182.96.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 198.178.236.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 203.158.68.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 203.158.72.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 203.158.76.0/23 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 203.158.88.0/24 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 203.158.89.0/24 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 204.52.188.0/24 v4 | no ROA | 42 | 33335400 | 2026-09-18 |
| 206.73.0.0/16 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 206.73.0.0/19 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 206.73.48.0/20 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 206.73.80.0/20 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 206.73.112.0/22 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 206.73.116.0/22 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 206.73.156.0/22 v4 | RPKI valid | 43 | 33335400 | 2026-09-18 |
| 212.8.160.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 212.21.192.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 212.31.192.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 212.41.128.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 212.108.0.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 212.127.0.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 212.162.192.0/18 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 213.15.0.0/16 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 213.137.160.0/19 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 213.194.0.0/18 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |
| 213.236.64.0/18 v4 | RPKI valid | 42 | 33335400 | 2026-09-18 |