DT
DNS-Tools Header-Analyzer
DNS-Tools header analysis tool
About this crawler
DNS-Tools Header-Analyzer is a web crawler identified by the regular-expression pattern DNS-Tools Header-Analyzer in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block DNS-Tools Header-Analyzer 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
- DNS-Tools Header-Analyzer
- Pattern
DNS-Tools Header-Analyzer- Tags
- monitoring
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
DNS-Tools Header-Analyzer
Block this crawler
robots.txt — disallow DNS-Tools Header-Analyzer:
User-agent: DNS-Tools Header-Analyzer
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} DNS-Tools Header-Analyzer [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "DNS-Tools Header-Analyzer") {
return 403;
}
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