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What is AhrefsSiteAudit?

AhrefsSiteAudit is the crawler behind the Site Audit tool of Ahrefs. Ahrefs users run Site Audit on a website to find technical SEO and on-page SEO issues.

Operator
Ahrefs
Purpose
Crawls a site for an Ahrefs Site Audit project.
robots.txt token
AhrefsSiteAudit
Example user agent
Mozilla/5.0 (compatible; AhrefsSiteAudit/6.1; +http://ahrefs.com/robot/site-audit)
How to verify
Check that the reverse DNS name ends in ahrefs.com or ahrefs.net, or check the source IP against the ranges Ahrefs publishes.
Reverse DNS
ahrefs.com, ahrefs.net
IP ranges
https://api.ahrefs.com/v3/public/crawler-ip-ranges
Operator documentation
https://ahrefs.com/robot
Last verified

How often is AhrefsSiteAudit impersonated?

We have not measured requests claiming to be AhrefsSiteAudit yet, so we show no share.

This directory measures requests between 3 July 2026 and 28 September 2026. The fake crawler report covers its own, earlier window (late June to 21 September 2026), so its figures differ from the ones here. Read it for the method.

Have a request that claims to be AhrefsSiteAudit? Check its IP address.

Should you block AhrefsSiteAudit?

Allow it if
you or your agency run Ahrefs Site Audit on this site.
Block it if
nobody who works on this site uses Ahrefs Site Audit.
What blocking changes
A Site Audit project for your site cannot crawl it.

To block it, add this group to your robots.txt. Ahrefs says AhrefsSiteAudit obeys robots.txt and Crawl-delay by default. The owner of a verified site can let it disobey robots.txt on that site.

User-agent: AhrefsSiteAudit
Disallow: /

robots.txt only asks. It does nothing against a client that ignores it or only pretends to be AhrefsSiteAudit. Stopping those takes verification at your edge.

Related bots

  • AhrefsBot (Ahrefs): Builds the link database behind Ahrefs and the Yep search engine.
  • Barkrowler (Babbar): Collects links and page metadata for Babbar.
  • DataForSeoBot (DataForSEO): Adds links to DataForSEO's backlink database.
  • DotBot (Moz): Gathers data for the Moz Link Index.
  • MJ12bot (Majestic): Maps links between websites for Majestic's link index.
  • Rogerbot (Moz): Crawls a site for the site audits of a Moz Pro Campaign.

See which bots reach your site, and which of them are who they claim to be.

Request a site audit