htdig
ht://Dig search engine indexer
About this crawler
htdig is a web crawler identified by the regular-expression pattern htdig in the User-Agent request header. It is categorised as search-engine. Use the regex above to detect, log, allow, or block htdig traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- htdig
- Pattern
htdig- Tags
- search-engine
- Reference
- http://www.htdig.org/
- Added
- 2026/05/09
- Instances
- 6 known sample(s)
Sample User-Agent strings
htdig/3.1.5
htdig/3.1.5 ([email protected])
htdig/3.1.5 (root@localhost)
htdig/3.1.5 ([email protected])
htdig/3.1.6 ([email protected])
htdig/3.1.6 ([email protected])
Block this crawler
robots.txt — disallow htdig:
User-agent: htdig
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} htdig [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "htdig") {
return 403;
}
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