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AS2856 · BT

AS2856 is the autonomous system number of BT, registered in United Kingdom.

Network name
BT-UK-AS British Telecommunications Limited
Country
🇬🇧 United Kingdom
Registry
RIPE NCC
Allocated
1993-12-22
Abuse contact
abuse@bt.com

What this means

Every address in the announced prefixes is routed through AS2856. When an IP lookup shows "AS2856", the address belongs to BT.

To report spam, scanning or attacks from this network, write to its abuse contact above, and include the IP address, the exact time with time zone, and log lines.

More tools: IP lookup · WHOIS lookup · blacklist check · what is an ASN?

Data: RIPEstat and Team Cymru, refreshed daily. Full routing details: bgp.he.net.