s4a-probe-bot
Web scraping and SEO analysis crawler tool
About this crawler
s4a-probe-bot is a web crawler identified by the regular-expression pattern s4a-probe-bot\/ in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block s4a-probe-bot 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
- s4a-probe-bot
- Pattern
s4a-probe-bot\/- Tags
- seo
- Reference
- https://www.seo4ajax.com/webscraper/
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 AppleWebKit (compatible; s4a-probe-bot/1.0; Fake-Googlebot; +https://www.seo4ajax.com/webscraper)
Block this crawler
robots.txt — disallow s4a-probe-bot:
User-agent: s4a-probe-bot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} s4a-probe-bot\/ [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "s4a-probe-bot\\/") {
return 403;
}
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