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Crawler, Spider, and User Agent ID


Forum to identify search engine spiders and user agents

 
Thread SubjectMessagesStarted byLast Message
Server Farms 2026
Continuing discussion of hosting and data center IP ranges
6 blend27 3:27 pm Feb 21, 2026
Server Farms 2025
Continuing discussion of hosting and data center IP ranges
5 not2easy 5:09 pm Mar 1, 2025
AI UAs - Identifying the crawlers AI uses
1 not2easy 5:38 pm Oct 18, 2023
At Home Without the Robots: 2023 edition
5 lucy24 11:39 am Jul 29, 2023
At Home with the Law-Abiding Robots (2021)
2 lucy24 8:32 pm Sep 6, 2021
At Home with the Robots: 2020 edition
11 lucy24 2:48 pm Aug 13, 2020
At Home with the Robots: 2019 edition
3 lucy24 3:52 am Mar 13, 2019
At Home with the Robots: 2017 edition
Critique of the Year's Active User Agents
15 lucy24 3:52 pm May 18, 2017
User Agents of Programming Libraries and Command Line Tools
Common user agents
14 incrediBILL 8:54 pm Apr 29, 2008
what do they want?
[3] ( 1 2 3 )
88 lucy24 9:40 pm Apr 29, 2026
 
0 12:00 am Jan 1, 1970
My website was vacuumed up by OpenAI
3 SumGuy 6:27 pm Apr 13, 2026
Microsoft, AS8075. Google, AS396982.
7 shawnb61 2:59 pm Apr 10, 2026
Fixed Line ISP- gtt.net
Are they Hu-men, AS3257?
13 blend27 3:25 am Apr 9, 2026
SleepBot
6 Bewenched 3:59 pm Apr 7, 2026
"traceparent" header
...part of OpenTelemetry SDK
1 blend27 8:07 pm Apr 1, 2026
PerplexityBot
What's the verdict?
3 SumGuy 12:16 am Mar 30, 2026
Youbot (new crawler?)
and google-inspection tool
1 SumGuy 11:50 pm Mar 13, 2026
FeedFetcher-Google running amok
7 Pfui 5:12 pm Mar 9, 2026
Procter & Gamble bot-running
(not just soap 'n' stuff)
9 Pfui 11:57 pm Feb 19, 2026
A useful resource for bot / proxy detectives
2 SumGuy 7:26 pm Jan 6, 2026
Softblocking 35.0.0.0/8
22 IJustWanttoPost 11:26 pm Dec 21, 2025
FBI Seeks To Unmask Anonymous Web Archiving Service Owner
Archive.today
4 SumGuy 11:46 pm Dec 17, 2025
Is anyone getting hits from 121.99.4.0/24 ?
15 SumGuy 3:28 am Dec 16, 2025
Where is grok bot / xAI?
Does grok use anonymous VPNs to crawl sites?
18 SumGuy 9:03 pm Dec 9, 2025