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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
Reflectionbot
2 lucy24 6:57 pm Sep 12, 2026
 
0 12:00 am Jan 1, 1970
User Agent Client Hints Detection (UA-CH)
Is anyone using this?
1 SumGuy 12:41 pm Sep 7, 2026
Annoying Crawler, Bot, or what?
Malicious traffic from a certain ISP/network[2] ( 1 2 )
60 PeterTroyWilliams 8:15 pm Sep 6, 2026
MathPicDatasetCrawler
3 lucy24 4:02 am Sep 2, 2026
Cloudflare now in the email pollution business
104.30.4.0/22
1 SumGuy 1:46 am Aug 28, 2026
Penetration testing using AI bots
Did I just see an OpenAI example?
3 SumGuy 12:55 am Aug 28, 2026
URLBuilder
this month's winner
2 lucy24 1:53 am Aug 26, 2026
Scraper - Komi Inc
140.235.142.0/24
1 Bewenched 9:08 pm Aug 22, 2026
SkypeUriPreview - links pasted into MS 365 Outlook
52.112.39.133
5 Bewenched 5:32 pm Aug 15, 2026
IbouBot
217.113.196.90
2 Bewenched 5:21 pm Aug 9, 2026
204.194.48.0/21 Bots hammering
1 Bewenched 4:23 am Aug 6, 2026
Hits from 31.105.x.x (Mistralbot ?)
1 SumGuy 12:12 am Jul 19, 2026
Interesting set of hits using forged searchbot User Agents
Including DeepSeek and xAI (?!)
4 SumGuy 12:34 pm Jul 2, 2026
Hacker spoofing as GoogleBot
136.234.222.64
8 Bewenched 3:23 pm May 28, 2026
Microsoft, AS8075. Google, AS396982.
9 shawnb61 6:13 pm May 24, 2026