ASN Lookup
Find the organisation and prefixes behind an ASN or IP address.
Enter a value above and run the check to see results here.
How it works
Find the organisation and prefixes behind an ASN or IP address.
Frequently asked questions
Is the ASN Lookup tool free to use?+
Yes. The ASN Lookup runs directly in NetInsight with no signup required. Free-tier usage is rate limited to keep the service fast for everyone.
Are my queries logged?+
Diagnostic inputs are processed to produce your result and are not sold or shared. See our Privacy Policy for full detail on retention.
How accurate are the ASN Lookup results?+
Results are fetched live from authoritative sources each time you run a check, so they reflect the current state rather than a cached snapshot.