SENTINEL-LinkCheck
Sentinel link validation and broken link detection crawler
About this crawler
SENTINEL-LinkCheck is a web crawler identified by the regular-expression pattern SENTINEL-LinkCheck in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block SENTINEL-LinkCheck 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
- SENTINEL-LinkCheck
- Pattern
SENTINEL-LinkCheck- Tags
- monitoring
- Reference
- https://oblivionsearch.com/
- Added
- 2026/04/26
- Instances
- 1 known sample(s)
Sample User-Agent strings
SENTINEL-LinkCheck/1.0 (+https://sentinel.oblivionzone.com/bot)
Block this crawler
robots.txt — disallow SENTINEL-LinkCheck:
User-agent: SENTINEL-LinkCheck
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} SENTINEL-LinkCheck [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "SENTINEL-LinkCheck") {
return 403;
}
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