ASN Lookup

Organisation, country and registration for any AS number

Free Online Tool

ASN Lookup — Complete Guide & Instructions

Resolve any AS number to its owning organisation, country, registration history and abuse contact using official RDAP registry data.

How to Use ASN Lookup

  1. 1 Enter an AS number like AS15169.
  2. 2 Click Check.
  3. 3 See organisation, dates and abuse contact.

Key Features & Capabilities

  • Official ARIN RDAP data.
  • Registration and last-change dates.
  • Abuse contact email when published.