ASN lookup

Every network on the internet, with its IP ranges, its country and whether Fraudex treats its traffic as VPN, proxy or hosting. 85,844 networks in 240 countries.

Largest hosting, VPN and proxy networks

Flagged by Fraudex: traffic from these is returned with "is_bot": true.

Largest networks

Networks by country

What is an ASN?

An autonomous system number (ASN) identifies one network on the internet: an ISP, a mobile carrier, a hosting company or a large business. Each network announces the IP ranges it controls, so knowing the ASN behind an address tells you who runs the connection. That is the fastest way to tell a home or mobile visitor from a rented server, VPN exit or proxy.

Fraudex keeps a list of the networks that real customers almost never browse from and checks every IP against it in under a millisecond. Try it on any address with the free IP checker, or add it to your sign-up, login or checkout.