Autonomous system
AS2856 BT-UK-AS BTnet UK Regional network
Residential RIPE
IPv4 addresses
13.81M
505 prefixes
IPv6 prefixes
5
counted as prefixes, not addresses
Countries
1
mostly GB
Flagged prefixes
0
none
Summary
BT (British Telecom)
isp eyeball backbone
BT's UK network (BT-UK-AS, BTnet) — the incumbent British telecom's internet
backbone and access network.
What it's used for
- Consumer and business broadband across the UK, plus BTnet leased-line/business internet and a national backbone.
Notable
- A major "eyeball" network; BT's Openreach access infrastructure underpins much of UK broadband, including lines resold by other ISPs.
Interesting
- As the UK's former state monopoly, BT's network is the historic spine of British telecommunications, now carrying everything from home fibre to enterprise WANs.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 510 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS2856- Registry name
- BT-UK-AS
- Registrant
- BTNET-INFRA-MNT
- Abuse contact
- abuse@bt.com
- Registered
- 2002-08-30
- Last changed
- 2026-07-21
- Status
- active
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere