Yandex
YandexBot
Indexes pages for Yandex Search.
Web searchSEO analysis
YandexPagechecker
Fetches pages for markup validation.
Operated by Yandex
See your agent traffic PurposeSEO analysis
HTTP identifierYandexPagechecker
IdentityVerify beyond the name
THE SIGNAL
What this visit tells you
A validation visit may have been triggered by a webmaster.
Crawled URLs
Broken destinations
Crawl duration
Your next move
Match the URL to your validation run and inspect the returned markup.
The technical details
MarkdownHow to identify it
Look for the YandexPagechecker identifier in a request’s User-Agent. This is a name match, not identity verification. Version strings may change.
How to check identity
Confirm reverse DNS under yandex.ru, yandex.net or yandex.com, then resolve that hostname back to the original request IP.
Access and robots.txt
The operator documents robots.txt rules for this identifier.
Optional full-site opt-out. Merge with existing rules only if intended. robots.txt does not secure private content.
User-agent: YandexPagechecker
Disallow: /Seeing 403 or 404 responses?
403 means access was denied; 404 means the resource was not found. Compare the public path, request time, edge security event and origin response to find the cause.
Separate intended restrictions and secret-file probes from pages that should work. A User-Agent name alone does not justify allowing a request.
SourcesReviewed 2026-09-14
Identity and purpose are based on these sources. Analytics interpretation and suggested checks are Apostl guidance.
APOSTL PulseSee YandexPagechecker in context
See their requests. Find the pages that matter.
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