BGP / ASN lookup

Which network owns this address, and is its route protected?

Live lookupPlain English + technicalFree, no sign-upasn.middle.network

How to read the results

The health check runs this and 30 more checks on a domain, then ranks what to fix.

Firewalls, switches and Wi-Fi bundled for homes and offices.

Find the autonomous system (ASN), network name, prefix and country for an IP, domain or AS number, and check its RPKI route validity.

Every result comes in two styles: plain English for everyone, and the exact technical detail for engineers, with the raw JSON one click away.

An autonomous system number: the ID of a network (ISP, cloud or company) on the internet.