ASN / BGP Lookup
Look up autonomous system numbers, IP prefixes, routing paths and organization data
IP Address or Domain
About ASN / BGP Lookup
Look up ASN, BGP, and IP prefix data for any autonomous system or address. See the organization, announced prefixes, and routing information behind an IP — invaluable for network engineering, security research, and understanding who hosts what.
- Organization and ASN details
- Announced IP prefixes and routing
- Great for network and security research
Frequently asked questions
What is an ASN?
An Autonomous System Number identifies a network operator on the internet and is used in BGP routing between providers.
Can I find who owns an IP?
Yes — the lookup maps an IP to its ASN and the organization that announces it.