changedetection

monitoring changedetection

ChangeDetection web crawler for monitoring

About this crawler

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

Block-rate · top 25k sites

0.065%
latest snapshot
2026-06-04
matched key: changedetection
2026-05-012026-06-040.11%

Technical details

Name
changedetection
Pattern
changedetection
Tags
monitoring
Reference
https://visualping.io
Added
2013/09/13
Instances
1 known sample(s)

Sample User-Agent strings

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; http://www.changedetection.com/bot.html )

Block this crawler

robots.txt — disallow changedetection:

User-agent: changedetection Disallow: /

Apache .htaccess — return 403:

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

Nginx — return 403 inside a server block:

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