ASN / BGP Lookup

Lookup ASN ownership and BGP routing context by ASN, IP, or prefix
This free online asn / bgp lookup runs in your browser and is part of our Developer Tools collection.

ASN / BGP Lookup

Lookup ASN ownership and routing context by ASN, IP address, or CIDR prefix.

What this helps with

  • Identify network ownership and upstream ASN context
  • Map public IPs to their origin ASN quickly
  • Learn how prefixes relate to BGP routing entities

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