Splunk Synthetics
Website monitoring crawler measuring availability
About this crawler
Splunk Synthetics is a web crawler identified by the regular-expression pattern Splunk Synthetics\) in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block Splunk Synthetics 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
- Splunk Synthetics
- Pattern
Splunk Synthetics\)- Tags
- monitoring
- Reference
- https://docs.splunk.com/observability/en/synthetics/intro-synthetics.html
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (X11; Linux x86_64; Splunk Synthetics) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.88 Safari/537.36
Block this crawler
robots.txt — disallow Splunk Synthetics:
User-agent: Splunk Synthetics
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Splunk Synthetics\) [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Splunk Synthetics\\)") {
return 403;
}
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