Who blocks AI · #594 in the Majestic Million
Does perl.org block AI crawlers?
No. perl.org’s robots.txt lets all 19 AI crawlers we track crawl the site. Search engines such as Googlebot and Bingbot may crawl it.
GPTBotAllowedOAI-SearchBotAllowedClaudeBotAllowedPerplexityBotAllowedGoogle-ExtendedAllowedCCBotAllowed- robots.txt
- www.perl.org/robots.txt · 7 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 | Allowed | no group applies | |
Bingbot | Microsoft | Allowed | no group applies |
DuckDuckBot | DuckDuckGo | Allowed | no group applies |
Applebot | Apple | Allowed | no group applies |
PetalBot | Huawei | Allowed | no group applies |
YandexBot | Yandex | Allowed | no group applies |
Baiduspider | Baidu | Allowed | no group applies |
AI search
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
OAI-SearchBot | OpenAI | Allowed | no group applies |
PerplexityBot | Perplexity | Allowed | no group applies |
Claude-SearchBot | Anthropic | Allowed | no group applies |
DuckAssistBot | DuckDuckGo | Allowed | no group applies |
Amazonbot | Amazon | Allowed | no group applies |
YouBot | You.com | Allowed | no group applies |
AI training
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
GPTBot | OpenAI | Allowed | no group applies |
ClaudeBot | Anthropic | Allowed | no group applies |
Google-Extended | Allowed | no group applies | |
CCBot | Common Crawl | Allowed | no group applies |
Applebot-Extended | Apple | Allowed | no group applies |
GoogleOther | Allowed | no group applies | |
Meta-ExternalAgent | Meta | Allowed | no group applies |
Bytespider | ByteDance | Allowed | no group applies |
User-triggered fetchers
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
ChatGPT-User | OpenAI | Allowed | no group applies |
Claude-User | Anthropic | Allowed | no group applies |
Perplexity-User | Perplexity | Allowed | no group applies |
MistralAI-User | Mistral | Allowed | no group applies |
Meta-ExternalFetcher | Meta | Allowed | no group applies |
SEO tools
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
AhrefsBot | Ahrefs | Allowed | no group applies |
SemrushBot | Semrush | Allowed | no group applies |
MJ12bot | Majestic | Allowed | no group applies |
DotBot | Moz | Allowed | no group applies |
View www.perl.org/robots.txt · 7 lines
What do the bots actually get?
This page reads robots.txt, which states what perl.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 perl.org Test a path in the robots.txt tester
History
- 19 October 2026: first checked.
Questions
Does perl.org block GPTBot?
No. perl.org’s robots.txt lets GPTBot crawl the site. GPTBot is OpenAI’s crawler for training data; blocking it doesn’t affect ChatGPT search, which uses OAI-SearchBot. Checked 9 November 2026.
Does perl.org block ClaudeBot?
No. perl.org’s robots.txt lets ClaudeBot crawl the site. ClaudeBot is Anthropic’s crawler for training data. Checked 9 November 2026.
Does perl.org block Google-Extended?
No. perl.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 perl.org block PerplexityBot?
No. perl.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 perl.org?
Yes. perl.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.