Access / carrier network
BT network & IP lookup
Understand the network organization and an associated ASN, then look up the current ownership of a specific public IP.
Verified network example
BT-UK-AS British Telecommunications Limited
Autonomous system included in this directory: AS2856
IPv4 / IPv6 prefix counts: 539 / 7
Snapshot collected: 2026-09-22 UTC
How to verify a provider result
Enter the public IP you want to check and compare the returned organization and ASN with this BT profile. Retail brands, registered address holders, and routing operators may differ, and one brand can use several networks. One ASN example is not a complete inventory of the brand’s address space.
Your current IP is the HTTP exit used to reach this site. Lookups use external IP intelligence services.
Related network resources
The current example is BT AS2856. A retail broadband brand and BGP routing organization may differ; compare the ASN and organization in an IP lookup with the service brand rather than expecting an exact name match.