IP & ASN Lookup
Find the network behind an IP address, or what an autonomous system announces in BGP.
Try:
Routing data comes from RIPEstat (RIPE NCC), which collects BGP from route collectors worldwide; location is approximate. Limited to 30 lookups per 10 minutes.
About this tool
What is an ASN?
An Autonomous System Number identifies a network (an ISP, host or company) on the internet. Each AS announces the IP prefixes it's responsible for using BGP, the protocol that routes traffic between networks.
What does RPKI valid mean?
RPKI lets the owner of an address block sign which AS may announce it. "valid" means the announcement matches that signature; "invalid" can indicate a misconfiguration or a hijack; "unknown" means no signature exists.
Abuse contacts
Report spam, attacks or abuse from an IP address to the abuse contact of the network that announces it, not to the registrar of a domain.