Source CIDR

AhrefsBot

Official

Autonomous systems (ASNs)

Known ASNs used by AhrefsBot.

BGP & hosting context

Ahrefs does not operate its own autonomous system. AhrefsBot traffic is commonly seen on commercial hosting; treat ASN as a hint only and confirm with reverse DNS and their official crawler IP API.

Third-party hosting & clouds

OVH SAS

AS16276

Example PTR observed in the wild: proxy-fr005-san224.ahrefs.net

Documentation

Semrush Bot Another SEO crawler where IP identity matters. Lumar SEO crawler ranges from an official source. Common Crawl Open web crawler with a machine-readable CCBot feed.