ASN Lookup
ASN & Network Lookup
See the Autonomous System Number behind an IP, plus the owning organization and network details.
Key Features
Full ASN records
The Autonomous System Number, the owning organization, and the ranges it announces.
Hosting or home
See whether an IP belongs to a residential ISP, a hosting company, or a cloud platform.
Spot risky networks
Some ASNs are known for spam and abuse. We tell you when an IP sits in one.
Try Our Other Tools
ASN Data FAQ
Why Choose IPScanner
Teams use IPScanner to tell real users apart from masked and automated traffic.
Accuracy you can measure
Verdicts come with a 0 to 100 confidence score, so you tune the threshold to your own risk instead of trusting one number.
Built to scale
The API runs on infrastructure sized for production traffic, with a 99.99% uptime target for business-critical use.
Data that stays fresh
We refresh VPN, proxy, and Tor lists continuously, so newly spun-up servers get caught quickly.
Easy to wire in
A plain REST API works with any language or framework. Most teams are live the same afternoon.
Documentation that's honest
Worked examples in curl, JavaScript, and Python, plus straight notes on what each signal does and doesn't mean.
People who know the domain
Support comes from engineers who work on IP detection every day, not a generic help desk.
