AS2856 British Telecommunications 🇬🇧 GB
British Telecommunications Limited. Announcing 545 prefixes, seen at the RIS collectors.
IPv4 prefixes
538
18,467,328 (72,138 × /24)
IPv6 prefixes
7
136 × /32
Upstreams
2
transit providers observed
Peers
10
settlement-free adjacencies
Downstreams
148
transit customers observed
Customer cone
153
ASes reachable through it
Registry and operator data
- AS number
- AS2856
- Name
- British Telecommunications
- Organisation
- BTnet (BT's UK IP Network - AS2856)
- Country
- 🇬🇧 GB
- RIR
- RIPENCC
- Allocated
- 1993-12-22
- Network type
- NSP
- Traffic levels
- 1-5Tbps
- Scope
- Regional
- Peering policy
- Selective
- IRR as-set
- RIPE::AS-BTGB
- Website
- http://www.bt.net
- PeeringDB
- net/281
- Exchanges
- 2
- Facilities
- 3
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
545 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 85.189.162.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.164.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.167.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.174.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.178.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.181.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.183.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.189.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.189.190.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.204.160.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 85.235.123.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 86.38.56.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.63.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.65.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.67.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.68.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.86.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.93.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.118.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.123.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.148.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.193.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.233.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.38.244.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.54.81.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.110.57.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.128.0.0/10 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.128.0.0/11 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 86.128.0.0/12 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 87.76.183.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 87.81.112.0/20 v4 | RPKI valid | 42 | 503042856 | 2026-09-24 |
| 87.86.24.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 87.232.114.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 87.237.16.0/21 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 89.39.172.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 89.117.183.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 89.117.198.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 89.117.203.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 89.117.235.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 89.145.172.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.90.125.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.90.127.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.102.189.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.102.190.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.102.191.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.111.0.0/16 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.142.128.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.227.78.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 91.230.16.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 91.230.40.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 91.236.216.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 94.26.64.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 94.72.248.0/21 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 94.125.16.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 94.125.17.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 94.125.18.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 94.125.19.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 94.232.100.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 95.144.0.0/13 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 95.173.59.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 109.144.0.0/12 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 109.180.0.0/15 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 109.205.158.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 109.249.0.0/16 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 132.146.0.0/16 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 132.153.3.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.244.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.245.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.246.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.247.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.248.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.249.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.250.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.251.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.252.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.253.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.153.254.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 132.244.79.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 138.108.94.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 142.205.162.0/23 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 143.223.132.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 144.87.0.0/20 v4 | no ROA | 42 | 503042856 | 2026-09-20 |
| 144.87.16.0/20 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 144.87.24.0/21 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 144.87.24.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 144.87.28.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 144.87.128.0/17 v4 | no ROA | 42 | 503042856 | 2026-09-20 |
| 144.177.74.0/23 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 145.79.172.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.78.68.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.90.32.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.90.36.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.90.55.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.90.115.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.90.127.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.148.0.0/14 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.152.0.0/16 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 147.189.68.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 147.189.76.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 148.252.3.0/24 v4 | no ROA | 19 | 503042856 | 2026-09-18 |
| 148.252.7.0/24 v4 | no ROA | 19 | 503042856 | 2026-09-18 |
| 148.253.220.0/23 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 149.117.130.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 149.254.0.0/16 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 149.254.1.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.240.180.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.240.184.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.240.188.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.240.192.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.240.196.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.240.200.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.52.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.56.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.60.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.180.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.184.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.188.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.192.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.196.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.241.200.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.242.24.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.242.42.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.243.254.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.244.80.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.244.204.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.244.208.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.245.80.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.245.204.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.245.208.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.246.145.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.246.239.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.247.220.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.247.231.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 151.247.245.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 152.114.196.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 152.114.220.0/23 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 152.114.222.0/23 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 156.146.3.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 157.236.254.0/23 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 157.236.254.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 157.236.255.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 159.180.96.0/19 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 159.197.13.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 159.197.44.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 159.197.45.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 159.253.66.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 161.104.0.0/21 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.37.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.67.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.98.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.115.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.122.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.208.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.217.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.222.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 163.5.249.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 164.38.2.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.12.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.16.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.31.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.32.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.33.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.34.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.120.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.134.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.148.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.149.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.156.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.184.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.196.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.38.197.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.134.1.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.134.134.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.134.135.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.134.136.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.134.137.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 164.134.138.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 165.120.0.0/16 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 166.88.17.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 166.88.18.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 166.88.32.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 166.88.200.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 167.148.60.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.78.106.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.78.108.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.78.112.0/21 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.78.120.0/21 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.92.112.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.92.180.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.93.104.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.94.244.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.95.60.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 178.212.56.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 185.58.165.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 185.68.200.0/22 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 185.90.32.0/22 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 185.128.205.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 185.149.6.0/24 v4 | no ROA | 42 | 503042856 | 2026-09-18 |
| 185.177.64.0/23 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |
| 185.230.13.0/24 v4 | RPKI valid | 42 | 503042856 | 2026-09-18 |