IAS crawler

advertising IAS crawler

Bot of Integral Ad Science, Inc.

About this crawler

IAS crawler is a web crawler identified by the regular-expression pattern IAS crawler in the User-Agent request header. It is categorised as advertising. Use the regex above to detect, log, allow, or block IAS crawler traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

0.13%
latest snapshot
2026-06-04
matched key: IAS crawler
2026-05-012026-06-040.17%

Technical details

Name
IAS crawler
Pattern
IAS crawler
Tags
advertising
Reference
https://integralads.com/ias-privacy-data-management/policies/site-indexing-policy/
Added
2018/06/06
Instances
1 known sample(s)

Sample User-Agent strings

IAS crawler (ias_crawler; http://integralads.com/site-indexing-policy/)

Block this crawler

robots.txt — disallow IAS crawler:

User-agent: IAS crawler Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} IAS crawler [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "IAS crawler") { return 403; }
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