ASN Lookup

Looks up the Autonomous System behind an IP or AS number, returning the organization name, announced IP prefixes, peering relationships, and country of registration. Every IP on the public internet belongs to some AS, and identifying which one is often the fastest way to understand what kind of network you're actually dealing with. Data is pulled from RIPE Stat rather than older tools like bgpview.io, which has been discontinued.

Some IPs are announced under more than one AS simultaneously, or via an upstream provider's AS rather than the end organization's own — in those cases, the AS shown is whoever is making that specific route announcement, not necessarily who "owns" the traffic in a business sense.

📖 Read more in our Knowledge Base →