Does freebsd.org block AI crawlers?

No. freebsd.org’s robots.txt lets all 19 AI crawlers we track crawl the site, though it keeps GPTBot and CCBot out of some paths. Search engines such as Googlebot and Bingbot may crawl it.

GPTBotPartly blocked OAI-SearchBotAllowed ClaudeBotAllowed PerplexityBotAllowed Google-ExtendedAllowed CCBotPartly blocked

robots.txt: www.freebsd.org/robots.txt · 32 lines
llms.txt: none
Checked: 9 November 2026, as canaicrawl. We check again every week.

Every bot, and the line that decides

Search engines

Bot	Operator	robots.txt	Deciding line
`Googlebot`	Google	Allowed	no rule matches the home page
`Bingbot`	Microsoft	Allowed	no rule matches the home page
`DuckDuckBot`	DuckDuckGo	Allowed	no rule matches the home page
`Applebot`	Apple	Allowed	no rule matches the home page
`PetalBot`	Huawei	Allowed	no rule matches the home page
`YandexBot`	Yandex	Allowed	no rule matches the home page
`Baiduspider`	Baidu	Allowed	no rule matches the home page

AI search

Bot	Operator	robots.txt	Deciding line
`OAI-SearchBot`	OpenAI	Allowed	no rule matches the home page
`PerplexityBot`	Perplexity	Allowed	no rule matches the home page
`Claude-SearchBot`	Anthropic	Allowed	no rule matches the home page
`DuckAssistBot`	DuckDuckGo	Allowed	no rule matches the home page
`Amazonbot`	Amazon	Allowed	no rule matches the home page
`YouBot`	You.com	Allowed	no rule matches the home page

AI training

Bot	Operator	robots.txt	Deciding line
`GPTBot`	OpenAI	Partly blocked	line 9 · `Disallow: /cgi`
`ClaudeBot`	Anthropic	Allowed	no rule matches the home page
`Google-Extended`	Google	Allowed	no rule matches the home page
`CCBot`	Common Crawl	Partly blocked	line 12 · `Disallow: /cgi`
`Applebot-Extended`	Apple	Allowed	no rule matches the home page
`GoogleOther`	Google	Allowed	no rule matches the home page
`Meta-ExternalAgent`	Meta	Allowed	no rule matches the home page
`Bytespider`	ByteDance	Allowed	no rule matches the home page

User-triggered fetchers

Bot	Operator	robots.txt	Deciding line
`ChatGPT-User`	OpenAI	Allowed	no rule matches the home page
`Claude-User`	Anthropic	Allowed	no rule matches the home page
`Perplexity-User`	Perplexity	Allowed	no rule matches the home page
`MistralAI-User`	Mistral	Allowed	no rule matches the home page
`Meta-ExternalFetcher`	Meta	Allowed	no rule matches the home page

SEO tools

Bot	Operator	robots.txt	Deciding line
`AhrefsBot`	Ahrefs	Partly blocked	line 31 · `Disallow: /cgi`
`SemrushBot`	Semrush	Partly blocked	line 16 · `Disallow: /cgi`
`MJ12bot`	Majestic	Allowed	no rule matches the home page
`DotBot`	Moz	Partly blocked	line 25 · `Disallow: /cgi`

View www.freebsd.org/robots.txt · 32 lines

1User-agent: *

2Disallow: /cgi/man.cgi?apropos=2&

3Disallow: /cgi/ports.cgi?

4Disallow: /cgi/man-autocomplete.cgi

5Disallow: /cgi/ports-autocomplete.cgi

6Disallow: /statistic

8User-agent: GPTBot

9Disallow: /cgi

11User-agent: CCBot

12Disallow: /cgi

14# SEO

15User-agent: SemrushBot

16Disallow: /cgi

18User-agent: MJ12bot

19Disallow: /cgi

21User-agent: BLEXBot

22Disallow: /cgi

24User-agent: dotbot

25Disallow: /cgi

27User-agent: SeekportBot

28Disallow: /cgi

30User-agent: AhrefsBot

31Disallow: /cgi

What do the bots actually get?

This page reads robots.txt, which states what freebsd.org asks of crawlers. A firewall or CDN can still refuse a bot that robots.txt allows. The live check requests the page as each bot and shows the status it gets.

Run a live check on freebsd.org Test a path in the robots.txt tester

History

19 October 2026: first checked.

Questions

Does freebsd.org block GPTBot?

Partly. freebsd.org’s robots.txt keeps GPTBot out of some paths, such as /cgi, and lets it crawl the rest. GPTBot is OpenAI’s crawler for training data; blocking it doesn’t affect ChatGPT search, which uses OAI-SearchBot. Checked 9 November 2026.

Does freebsd.org block ClaudeBot?

No. freebsd.org’s robots.txt lets ClaudeBot crawl the site. ClaudeBot is Anthropic’s crawler for training data. Checked 9 November 2026.

Does freebsd.org block Google-Extended?

No. freebsd.org’s robots.txt lets Google-Extended crawl the site. Google-Extended is the token that controls whether Google may use pages for Gemini training and grounding; it doesn’t affect Google Search. Checked 9 November 2026.

Does freebsd.org block PerplexityBot?

No. freebsd.org’s robots.txt lets PerplexityBot crawl the site. PerplexityBot is the crawler that indexes pages for Perplexity’s answers. Checked 9 November 2026.

Can ChatGPT search find freebsd.org?

Yes. freebsd.org’s robots.txt lets OAI-SearchBot crawl the site. OAI-SearchBot is the crawler behind ChatGPT search; blocking it keeps the site out of ChatGPT’s search answers. Checked 9 November 2026.