$ query “AS2856” --type=asn → 1 result(s)
AS2856 · BT-UK-AS
British Telecommunications Limited
This autonomous system is not currently announcing any prefixes. Last seen: October 21, 2026.
AS2856 belongs to British Telecommunications Limited and is a major transit provider, based in the United Kingdom since 2002. The system announces a whopping 13.9 million IPv4 addresses (0.38% of routable IPv4 space), including a /10, and supports IPv6. Most of its address space is geolocated to the United Kingdom, with additional presence in the United States and Germany, and smaller footprints in 15 additional countries. Not currently announcing prefixes. Prefix announcements for this AS were recently updated.
Basic Information
- Country
- 🇬🇧 United Kingdom
- Category
- Internet Service Provider
- Network Role
- Major Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- August 30, 2002
- Last Changed
- June 30, 2026
- Last Seen
- October 21, 2026
Reputation
- Reputation
- Good — 97 flagged IPs out of 13 947 136 total (0.00%)
- Open Proxies
- 1 known open proxies in this network