BrowserStack
Cloud cross-browser testing platform using real browsers
About this crawler
BrowserStack is a web crawler identified by the regular-expression pattern BrowserStack in the User-Agent request header. It is categorised as browser-automation. Use the regex above to detect, log, allow, or block BrowserStack 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
- BrowserStack
- Pattern
BrowserStack- Tags
- browser-automation
- Reference
- https://www.browserstack.com/
- Added
- 2026/05/02
- rDNS suffixes
.browserstack.com- Instances
- 0 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely BrowserStack 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.
.browserstack.com
Sample User-Agent strings
no public sample user-agents recorded.
Block this crawler
robots.txt — disallow BrowserStack:
User-agent: BrowserStack
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} BrowserStack [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "BrowserStack") {
return 403;
}
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