01 · Operator
Who operates uCrawler
- Company
- Ucoz Media LLC
- Type
- Other bot
- Official docs
- blog.ucoz.ru
02 · Behavior
What uCrawler does
The policy page linked in the UA says the server accesses sites only to collect statistical information for marketing. It states the activity is not meant to harm anyone. It publishes no IP list and does not mention robots.txt.
03 · Impact
Why uCrawler matters for your site
If you allow it
- Reads public pages only, according to its policy
- Operator publishes a contact address
If you block it
- Brings no visitors or search visibility
- No documented robots.txt support or IP list
04 · Allow
How to allow uCrawler
robots.txt
User-agent: uCrawler
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "uCrawler")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: uCrawler
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "uCrawler") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} uCrawler [NC]
# RewriteRule .* - [F,L]05 · Block
How to block uCrawler
Start with robots.txt. If uCrawler keeps showing up in your logs, block it at your CDN or web server.
robots.txt
User-agent: uCrawler
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "uCrawler")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: uCrawler
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "uCrawler") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} uCrawler [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for uCrawler
The user agent published by the operator:
Mozilla/5.0 (compatible; uCrawler/1.0 ; +https://blog.ucoz.ru/upolicy)07 · Verification
Is it really uCrawler?
uCrawler’s operator publishes no IP ranges or hostnames, so requests cannot be verified. Treat the user agent as a claim, and watch your logs for unusual request rates.
FAQ
Questions about uCrawler
What is uCrawler?
uCrawler is a bot from Ucoz Media LLC. It visits websites to collect statistical information for marketing.
Is uCrawler malicious?
Its policy page says it does not intend to hack or harm sites. It asks site owners to whitelist its server IP.
How do I block uCrawler?
Robots.txt support is not documented. Block the user agent token uCrawler at the server or firewall.
Last reviewed Oct 8, 2026