Does idnes.cz block AI crawlers?
Blocks AI training and AI answers
idnes.cz blocks both AI training crawlers and AI answer crawlers in its robots.txt.
Checked from idnes.cz/robots.txt. Robots rules change; the live file is the source of truth.
- AI crawlers blocked
- 5 of 12
- AI bots named in robots.txt
- 6
- llms.txt
- Not found
- Popularity
- Tranco top 5,000 (#2,874)
Can AI assistants cite idnes.cz?
- ChatGPT search: its search crawlers may read the site
- Claude: its search crawlers may read the site
- Perplexity: its search crawler is blocked
idnes.cz opts out of AI training by OpenAI, Anthropic, Google, ByteDance. Training crawlers and answer crawlers are separate: blocking training doesn't by itself remove a site from AI answers.
AI crawler access, bot by bot
| Crawler | Used for | Status on idnes.cz |
|---|---|---|
| GPTBotOpenAI | AI training | Blocked |
| OAI-SearchBotOpenAI | AI answers | Some paths restricted |
| ChatGPT-UserOpenAI | AI answers | Some paths restricted |
| ClaudeBotAnthropic | AI training | Blocked |
| Claude-SearchBotAnthropic | AI answers | Some paths restricted |
| Claude-UserAnthropic | AI answers | Some paths restricted |
| PerplexityBotPerplexity | AI answers | Blocked |
| Google-ExtendedGoogle | AI training | Blocked |
| Applebot-ExtendedApple | AI training | Some paths restricted |
| CCBotCommon Crawl | AI training | Some paths restricted |
| BytespiderByteDance | AI training | Blocked |
| Meta-ExternalAgentMeta | AI training | Some paths restricted |
How idnes.cz compares
- 19% of the 1,278 popular sites we checked block GPTBot; idnes.cz is one of them.
- 18% of the 1,278 popular sites we checked block ClaudeBot; idnes.cz is one of them.
- 14% of the 1,278 popular sites we checked block PerplexityBot; idnes.cz is one of them.
- Among 170 sites of similar popularity, 24% block at least one AI crawler.
The robots.txt rules that apply to AI crawlers
User-agent: * Disallow: /*/diskuse*reakce= Disallow: /*/diskuse*vlakno= Disallow: /*/diskuse*strana= Disallow: /*/diskuse/ Allow: /*/diskuse$ Disallow: /*/diskuse*razeni= Disallow: /*/tisk$ Disallow: /*/ankety/ Disallow: /ankety.aspx*hlasuj Disallow: /export/ Disallow: /data.aspx Disallow: /*/undefined Disallow: /_servix/* Disallow: */redir.aspx Disallow: */Redir.aspx Disallow: *?setver= Disallow: *&setver= User-agent: GPTBot Disallow: / User-agent: Google-Extended Disallow: / User-agent: PerplexityBot Disallow: / User-agent: ClaudeBot Disallow: / User-agent: anthropic-ai Disallow: / User-agent: Bytespider Disallow: /
Excerpt: only groups for all user-agents (*) or named AI crawlers, up to 40 rules per group.
Sites with a similar AI policy
Does idnes.cz block GPTBot?
Yes. As of Oct 2, 2026, idnes.cz's robots.txt disallows GPTBot, OpenAI's training crawler.
Can ChatGPT search show results from idnes.cz?
Its robots.txt doesn't block OAI-SearchBot or ChatGPT-User, so ChatGPT's search crawlers may read it. Whether pages are actually shown depends on ChatGPT.
Does idnes.cz have an llms.txt file?
We didn't find a valid llms.txt at idnes.cz/llms.txt when we checked.
Data: idnes.cz's public robots.txt and llms.txt, fetched by AskableHQ. Popularity rank from the Tranco list (ID Y83YG). Methodology.