[invisit](https://invisit.dev) · [Docs](https://invisit.dev/docs) · [llms.txt](https://invisit.dev/llms.txt) · [llms-full.txt](https://invisit.dev/llms-full.txt)

# SeznamBot

> SeznamBot is a search engine crawler run by Seznam. Seznam.cz's robot that retrieves content for the Seznam search engine.

- Operator: Seznam
- Kind: Search engine crawler
- robots.txt token: SeznamBot
- Follows robots.txt: yes
- Source: https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/ (checked 2026-11-05)
- Page: https://invisit.dev/bots/seznambot

## What is SeznamBot?

Seznam.cz's robot that retrieves content for the Seznam search engine.

Crawls pages for a classic search index. Blocking it removes you from that search engine.

Seznam says it usually takes several days, and for rarely visited sites up to several weeks, for SeznamBot to pick up robots.txt changes.

- [Seznam’s documentation](https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/)

## SeznamBot user agent

Seznam documents this user agent for SeznamBot. Version numbers in it change over time, so match on the name, not the whole string.

```
Mozilla/5.0 (compatible; SeznamBot/4.0; +https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/)
```

## Should you block SeznamBot?

Allow it unless you want out of that search engine. Blocking a major search crawler removes your pages from its results.

## How to block SeznamBot in robots.txt

Add a group for its token to robots.txt at the root of your site.

A bot follows only the group that names it, so it ignores your `User-agent: *` rules once it has a group of its own. Repeat any paths you also want kept from it there.

```
User-agent: SeznamBot
Disallow: /
```

- [Build a robots.txt for AI bots](https://invisit.dev/tools/robots-txt-generator)

## How to verify a request is really SeznamBot

Anyone can send any user agent, so the string alone proves nothing.

Seznam publishes the IP ranges SeznamBot crawls from. A request that claims to be SeznamBot from any other address is not SeznamBot.

Or check by reverse DNS: look up the hostname of the request’s IP, confirm it ends in `seznam.cz`, then look that hostname up again and confirm it points back to the same IP.

- [SeznamBot IP ranges](https://search.seznam.cz/ipranges/seznambot.json)

## See when SeznamBot reads your site

Bots don’t run JavaScript analytics, so a script tag never sees them. invisit records crawler reads on the server instead, through its server SDK or a Cloudflare Worker, and shows which bots read which pages, next to your visitors.

- [Track crawlers with invisit](https://invisit.dev/docs/server/sdk#crawler-reads)

## Common questions

### What is SeznamBot?

SeznamBot is a search engine crawler run by Seznam. Seznam.cz's robot that retrieves content for the Seznam search engine.

### Is SeznamBot safe to block?

Allow it unless you want out of that search engine. Blocking a major search crawler removes your pages from its results.

### How do I block SeznamBot?

Add “User-agent: SeznamBot” followed by “Disallow: /” to your robots.txt.