Does ccc.de block AI crawlers?
Open to AI crawlers
ccc.de doesn't block any of the major AI crawlers we track in its robots.txt.
Checked from ccc.de/robots.txt. Robots rules change; the live file is the source of truth.
- AI crawlers blocked
- 0 of 12
- AI bots named in robots.txt
- 0
- llms.txt
- Not found
- Popularity
- Tranco top 5,000 (#2,616)
Can AI assistants cite ccc.de?
- ChatGPT search: its search crawlers may read the site
- Claude: its search crawlers may read the site
- Perplexity: its search crawlers may read the site
ccc.de doesn't opt out of AI model training through robots.txt. 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 ccc.de |
|---|---|---|
| GPTBotOpenAI | AI training | Allowed |
| OAI-SearchBotOpenAI | AI answers | Allowed |
| ChatGPT-UserOpenAI | AI answers | Allowed |
| ClaudeBotAnthropic | AI training | Allowed |
| Claude-SearchBotAnthropic | AI answers | Allowed |
| Claude-UserAnthropic | AI answers | Allowed |
| PerplexityBotPerplexity | AI answers | Allowed |
| Google-ExtendedGoogle | AI training | Allowed |
| Applebot-ExtendedApple | AI training | Allowed |
| CCBotCommon Crawl | AI training | Allowed |
| BytespiderByteDance | AI training | Allowed |
| Meta-ExternalAgentMeta | AI training | Allowed |
How ccc.de compares
- 19% of the 1,278 popular sites we checked block GPTBot; ccc.de does not.
- 18% of the 1,278 popular sites we checked block ClaudeBot; ccc.de does not.
- 14% of the 1,278 popular sites we checked block PerplexityBot; ccc.de does not.
- Among 188 sites of similar popularity, 24% block at least one AI crawler.
The robots.txt rules that apply to AI crawlers
No rules in ccc.de's robots.txt apply to all crawlers or to any AI crawler by name, so they're allowed by default.
Excerpt: only groups for all user-agents (*) or named AI crawlers, up to 40 rules per group.
Sites with a similar AI policy
Does ccc.de block GPTBot?
No. As of Oct 2, 2026, ccc.de's robots.txt doesn't block GPTBot.
Can ChatGPT search show results from ccc.de?
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 ccc.de have an llms.txt file?
We didn't find a valid llms.txt at ccc.de/llms.txt when we checked.
Data: ccc.de's public robots.txt and llms.txt, fetched by AskableHQ. Popularity rank from the Tranco list (ID Y83YG). Methodology.