What is IAS (Integral Ad Science) and how to unblock it?

IAS (also known as Integral Ad Science) is an automated solution integrated with ADBRO that is used by advertisers for brand safety analysis and content classification. IAS is integrated with all major Demand Side Platforms (DMP), so blocking IAS may reduce Site advertising revenues.

IAS works similar to search-engine robots, crawling Site pages and fully respects directives from robots.txt and may be blocked by firewall or web-server application. ADBRO Team constantly monitors IAS availability for all connected Publishers and may contact you in order to perform required changes.

Unblocking with robots.txt

The following directive should be added to the robots.txt file on your Site:

User-agent: ias_crawler
Disallow:

Unblocking with Firewall

IAS uses dynamic list of IPs to access your site. You can find an up-to-date published here: https://integralads.com/policy-docs/iasbot.json.

Steps to unblock the given address range depend on which firewall software is used your Site.

Unblocking with Web-Server

IAS can be identified by one of the following User-Agents:

IAS Crawler (ias_crawler; http://integralads.com/site-indexing-policy/)
IAS Wombles (ias_wombles; http://integralads.com/site-indexing-policy/)

Steps to unblock the given User-Agents depend on which web-server software is used on your Site.

Learn more about IAS Crawler at Integral Ad Science: IAS Site Indexing Policy.

Learn more about robots.txt at The Web Robots Pages: About /robots.txt.