N

NetcraftSurveyAgent

scanner NetcraftSurveyAgent

Netcraft survey web crawler bot

About this crawler

NetcraftSurveyAgent is a web crawler identified by the regular-expression pattern NetcraftSurveyAgent in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block NetcraftSurveyAgent traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

0.20%
latest snapshot
2026-06-04
matched key: NetcraftSurveyAgent
2026-05-012026-06-040.26%

Technical details

Name
NetcraftSurveyAgent
Pattern
NetcraftSurveyAgent
Tags
scanner
Added
2017/11/02
Instances
1 known sample(s)

Sample User-Agent strings

Mozilla/5.0 (compatible; NetcraftSurveyAgent/1.0; [email protected])

Block this crawler

robots.txt — disallow NetcraftSurveyAgent:

User-agent: NetcraftSurveyAgent Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} NetcraftSurveyAgent [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "NetcraftSurveyAgent") { return 403; }
← back to all crawlers