YandexMobileBot user agent
Operated by Yandex
YandexMobileBot is the Yandex robot that checks how pages work on mobile devices.
The YandexMobileBot bot at a glance
- YandexMobileBot is operated by Yandex and crawls web pages for a search engine index.
- The robots.txt token for YandexMobileBot is YandexMobileBot.
- Blocking a search engine crawler removes your pages from that search engine's results.
- YandexMobileBot robots.txt support: Yes.
- Recommendation for Generative Engine Optimization (GEO): Allow.
What is YandexMobileBot?
YandexMobileBot fetches pages with a mobile user agent to evaluate them for mobile search.
Yandex documents it in its list of robots.
Should you block YandexMobileBot?
Allow YandexMobileBot unless it causes a measurable load problem.
| Effect on search rankings | Blocking a search engine crawler removes your pages from that search engine's results. |
|---|---|
| Effect on AI visibility | AI features built on that search index, such as Google AI Overviews and AI Mode on top of Googlebot, also lose access to your pages. |
| Follows robots.txt | Yes |
| Recommendation | Allow |
How to block or allow YandexMobileBot
Put the robots.txt rule in the file at the root of every domain and subdomain, for example https://example.com/robots.txt. The token YandexMobileBot is matched case-insensitively.
robots.txt: block
# Block YandexMobileBot
User-agent: YandexMobileBot
Disallow: /robots.txt: allow
# Allow YandexMobileBot
User-agent: YandexMobileBot
Allow: /robots.txt: partial
# Keep YandexMobileBot out of private areas only
User-agent: YandexMobileBot
Disallow: /wp-admin/
Disallow: /cart/
Disallow: /checkout/
Disallow: /my-account/
Allow: /Nginx
# Nginx: return 403 to YandexMobileBot
if ($http_user_agent ~* "(YandexMobileBot)") {
return 403;
}Apache
# Apache .htaccess: return 403 to YandexMobileBot
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} (YandexMobileBot) [NC]
RewriteRule .* - [F,L]Cloudflare WAF
# Cloudflare > Security > WAF > Custom rule, action: Block
(http.user_agent contains "YandexMobileBot")How to verify real YandexMobileBot traffic
Reverse DNS check: look up the request IP, confirm the hostname ends in yandex.ru, yandex.net, yandex.com, then look up that hostname and confirm it returns the same IP.
# 1. Reverse lookup: the hostname must end in yandex.ru, yandex.net, yandex.com
host REQUEST_IP
# 2. Forward lookup: must return the same REQUEST_IP
host HOSTNAME_FROM_STEP_1How to find YandexMobileBot in your server logs
Search the web server access log for the token. The command below counts YandexMobileBot requests per URL on Nginx or Apache.
grep -i "YandexMobileBot" access.log | awk '{print $7}' | sort | uniq -c | sort -rn | head -20For a full report per AI bot, upload the log to the AI Log File Analyzer, a free tool by Justin Hà.
YandexMobileBot user agent string
The full user agent Yandex publishes for YandexMobileBot. Version numbers such as Chrome/W.X.Y.Z change over time, so match the token, not the whole string.
Mozilla/5.0 (iPhone; CPU iPhone OS 8_1 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12B411 Safari/600.1.4 (compatible; YandexMobileBot/3.0; +http://yandex.com/bots)YandexMobileBot FAQ
YandexMobileBot identifies itself with the robots.txt token "YandexMobileBot". A typical request header reads: Mozilla/5.0 (iPhone; CPU iPhone OS 8_1 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12B411 Safari/600.1.4 (compatible; YandexMobileBot/3.0; +http://yandex.com/bots)
Yes. Yandex states that YandexMobileBot follows robots.txt rules written for the "YandexMobileBot" token.
Blocking a search engine crawler removes your pages from that search engine's results. AI features built on that search index, such as Google AI Overviews and AI Mode on top of Googlebot, also lose access to your pages.
Add two lines to the robots.txt file at the root of each domain and subdomain: "User-agent: YandexMobileBot" followed by "Disallow: /". The token is case-insensitive. Changes can take up to 24 hours to be picked up.
Yes. Run a reverse DNS lookup on the request IP; a real YandexMobileBot request resolves to yandex.ru, yandex.net, yandex.com, and a forward lookup of that hostname returns the same IP.
Search your server access log for "YandexMobileBot", for example with: grep -i "YandexMobileBot" access.log. The AI Log File Analyzer by Justin Hà counts visits per AI bot from an uploaded log file.
Sources: Yandex crawler documentation. Last reviewed by Justin Hà.
See which of these bots actually reach your website
The AI Log File Analyzer by Justin Hà counts visits from GPTBot, ClaudeBot, PerplexityBot and other AI crawlers in your server log, for free. The GEO Technical Package sets up robots.txt, llms.txt and crawler access for AI search.
