sentry
Sentry error tracking web crawler bot
About this crawler
sentry is a web crawler identified by the regular-expression pattern (^| )sentry\/ in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block sentry traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- sentry
- Pattern
(^| )sentry\/- Tags
- monitoring
- Reference
- https://sentry.io/welcome/
- Added
- 2018/03/27
- rDNS suffixes
.sentry.dev,.sentry.io- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely sentry with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.sentry.dev.sentry.io
Sample User-Agent strings
sentry/8.22.0 (https://sentry.io)
Block this crawler
robots.txt — disallow sentry:
User-agent: sentry
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} (^| )sentry\/ [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "(^| )sentry\\/") {
return 403;
}
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