DowntimeDetector
Availability monitor detecting and reporting website downtime incidents
About this crawler
DowntimeDetector is a web crawler identified by the regular-expression pattern DowntimeDetector\/ in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block DowntimeDetector traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
No block-rate data for this crawler.
Technical details
- Name
- DowntimeDetector
- Pattern
DowntimeDetector\/- Tags
- monitoring
- Reference
- https://datadome.co/bots/downtimedetector/
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
DowntimeDetector/4.0 (+https://downforeveryoneorjustme.com)
Block this crawler
robots.txt — disallow DowntimeDetector:
User-agent: DowntimeDetector
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} DowntimeDetector\/ [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "DowntimeDetector\\/") {
return 403;
}
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