ASN lookup
Look up the autonomous system number for an IP, plus the owning organization, network type and the ranges it announces.
The Autonomous System Number, the owning organization, and the ranges it announces.
See whether an IP belongs to a residential ISP, a hosting company, or a cloud platform.
Some ASNs are known for spam and abuse. We tell you when an IP sits in one.
Frequently Asked Questions
IPScanner
Teams use IPScanner to tell real users apart from masked and automated traffic.
Verdicts come with a 0 to 100 confidence score, so you tune the threshold to your own risk instead of trusting one number.
The API runs on infrastructure sized for production traffic, with a 99.9% uptime target for business-critical use.
We refresh VPN, proxy, and Tor lists continuously, so newly spun-up servers get caught quickly.
A plain REST API works with any language or framework. Most teams are live the same afternoon.
Worked examples in curl, JavaScript, and Python, plus straight notes on what each signal does and doesn't mean.
Support comes from engineers who work on IP detection every day, not a generic help desk.
Your key is on screen as soon as you sign up, with no card. Claim 25,000 free credits when you want to block or run lookups.