IAS Crawler

Verifiable

Content-rating and ad-verification crawler operated by Integral Ad Science. It visits web pages to assess content quality and brand safety and to support invalid-traffic detection for advertisers. IAS publishes the public-facing addresses its robots crawl from as a JSON file linked from its indexing policy; the file is in a shape this directory's feed formats cannot consume, so the ranges are snapshotted here instead.

Operated by Integral Ad Science · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexias_crawler
observedIAS Crawler (ias_crawler; http://integralads.com/site-indexing-policy/)

How to verify

Documented static ranges: 3.217.168.199, 3.226.51.67, 18.214.43.70, 23.21.212.31, 34.195.212.30, 35.175.92.196, 92.42.105.32, 92.42.105.33, 92.42.105.34, 92.42.105.35, 92.42.105.36, 92.42.105.37, 92.42.105.38, 92.42.105.39, 92.204.170.15, 92.204.190.235, 92.204.248.55, 151.106.17.251, 162.211.125.4, 162.211.125.5, 162.211.125.6, 162.211.125.7, 162.211.125.8, 173.224.127.64, 173.224.127.65, 173.224.127.66, 173.224.127.67, 173.224.127.68, 173.224.127.69, 173.224.127.70, 173.224.127.71

IP ranges (31)

Refreshed daily from the operator's feed. Also available as /data/ips/integralads-crawler.ips and /data/bots/integralads-crawler.json.

151.106.17.251
162.211.125.4
162.211.125.5
162.211.125.6
162.211.125.7
162.211.125.8
173.224.127.64
173.224.127.65
173.224.127.66
173.224.127.67
173.224.127.68
173.224.127.69
173.224.127.70
173.224.127.71
18.214.43.70
23.21.212.31
3.217.168.199
3.226.51.67
34.195.212.30
35.175.92.196
92.204.170.15
92.204.190.235
92.204.248.55
92.42.105.32
92.42.105.33
92.42.105.34
92.42.105.35
92.42.105.36
92.42.105.37
92.42.105.38
92.42.105.39

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Verifiable
Respects robots.txt
Honors robots.txt (token: ias_crawler)
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.