CrawlCheck

AI crawlers · Search indexes

Seznambot

Seznambot is the search index crawler run by Seznam: indexes pages for Seznam search in the Czech Republic. Its operator documents how to verify it: reverse DNS to seznam.cz, then forward DNS back to the same address. A reverse DNS lookup on the source address must return the operator's domain, and a forward lookup on that name must return the same address.

User-agent tokenSeznambot
OperatorSeznam
What it doesindexes pages for Seznam search in the Czech Republic
Kindsearch index crawler
Can a request be verified?Yes — reverse dns
Verification sourcereverse DNS to seznam.cz, then forward DNS back to the same address
In a CrawlCheck scanRead from robots.txt; a refusal is scored

Allow or block it in robots.txt

User-agent: Seznambot
Disallow: /
User-agent: Seznambot
Allow: /

Add a group that names it: "User-agent: Seznambot" followed by "Disallow: /". A crawler follows only the most specific group that names it, so once a group names Seznambot, rules under "User-agent: *" no longer apply to it; repeat in that group any Disallow lines you still want.

What blocking it changes

Indirectly. It feeds indexes pages for Seznam search in the Czech Republic. A refusal removes pages from that index, and most AI answer surfaces still draw on search indexes.

What it actually did on crawlcheck.io

Verified requests949
Requests using its name from outside its operator's ranges0 (0% of claims)
robots.txt fetched24 times
Fetches of paths robots.txt disallows0
Observed2026-10-10 to 2026-11-11

Measured on this site’s own traffic, verified against the operator’s published ranges. Every agent’s record: agent conduct.

See what Seznambot and every other named agent receive from your own site: run a free scan. The full catalogue is on AI crawlers and as JSON at /ai-crawlers.json.

Questions about Seznambot

QHow do I block Seznambot in robots.txt?
Add a group that names it: "User-agent: Seznambot" followed by "Disallow: /". A crawler follows only the most specific group that names it, so once a group names Seznambot, rules under "User-agent: *" no longer apply to it; repeat in that group any Disallow lines you still want.
QHow can I tell if a request from Seznambot is real?
Its operator documents how to verify it: reverse DNS to seznam.cz, then forward DNS back to the same address. A reverse DNS lookup on the source address must return the operator's domain, and a forward lookup on that name must return the same address.
QDoes blocking Seznambot affect whether my site appears in AI answers?
Indirectly. It feeds indexes pages for Seznam search in the Czech Republic. A refusal removes pages from that index, and most AI answer surfaces still draw on search indexes.
QDoes CrawlCheck test my site as Seznambot?
Not as a request. CrawlCheck reads the rules your robots.txt sets for Seznambot and reports them. A refusal of it counts toward the grade, because it costs the site visibility.