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
63
transit customers observed
Customer cone
322
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
- RIPE::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
40 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 2001:740::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2402:fb00:8000::/39 v6 | RPKI valid | 35 | 33335400 | 2026-09-18 |
| 2402:fb00:8400::/39 v6 | RPKI valid | 35 | 33335400 | 2026-09-18 |
| 2402:fb00:8800::/40 v6 | RPKI valid | 35 | 33335400 | 2026-09-18 |
| 2402:fb00:c000::/39 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2402:fb00:c200::/39 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2606:f100:d000::/39 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2606:f100:d400::/39 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2606:f100:d600::/39 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2606:f100:d800::/38 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2606:f100:dc00::/38 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2606:f100:e400::/39 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2000::/23 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2080::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2081::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2082::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2083::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2084::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2086::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2089::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:208a::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:208b::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:208c::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:208d::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2090::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2094::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2095::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2096::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2097::/32 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200::/25 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:200::/40 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:300::/40 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:900::/40 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:b00::/40 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:d00::/40 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:2000::/40 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2200:5300::/40 v6 | RPKI valid | 35 | 33335400 | 2026-09-18 |
| 2a00:2280::/25 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a00:2300::/25 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |
| 2a0c:7c80::/29 v6 | RPKI valid | 32 | 33335400 | 2026-09-18 |