ASN Lookup
Resolve autonomous system numbers and network metadata for IPv4 and IPv6 addresses via RDAP.
ASN lookups run from the PacketWizard server using RDAP IP network registries.
What is ASN Lookup?
An ASN (Autonomous System Number) identifies a network operator on the internet. ASN lookup helps you see which organization announces a given address or prefix.
How it works
PacketWizard resolves the ASN and related network metadata for the IP or organization context you provide, then links into deeper IP intelligence tools.
Common issues
Hosting vs ISP confusion
Cloud providers and transit ISPs can both appear in ASN data. Use RDAP and IP intelligence together for ownership context.
Frequently asked questions
Why does ASN matter during an outage?
Knowing the operating ASN helps you decide whether an issue is local, provider-side, or upstream transit — and whom to contact.
Related tools
Continue with these related PacketWizard tools for adjacent diagnostics.