Who blocks AI · #187 in the Majestic Million

robots.txt · checked 9 Nov 2026

Does tandfonline.com block AI crawlers?

Yes. tandfonline.com’s robots.txt blocks 1 of the 19 AI crawlers we track, including GPTBot. Search engines such as Googlebot and Bingbot may crawl it.

GPTBotBlocked OAI-SearchBotAllowed ClaudeBotAllowed PerplexityBotAllowed Google-ExtendedAllowed CCBotAllowed

robots.txt: www.tandfonline.com/robots.txt · 55 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	Blocked	line 52 · `Disallow: /` under `User-agent: GPTBot`
`ClaudeBot`	Anthropic	Allowed	no rule matches the home page
`Google-Extended`	Google	Allowed	no rule matches the home page
`CCBot`	Common Crawl	Allowed	no rule matches the home page
`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	Allowed	no rule matches the home page
`SemrushBot`	Semrush	Allowed	no rule matches the home page
`MJ12bot`	Majestic	Allowed	no rule matches the home page
`DotBot`	Moz	Allowed	no rule matches the home page

View www.tandfonline.com/robots.txt · 55 lines

1Sitemap: https://www.tandfonline.com/sitemap-index-1.xml

2User-agent: *

3Disallow: /action

4Disallow: /help

5Disallow: /search

6Disallow: /feedback

7Disallow: /rss

8Disallow: /page/account-confirmation-thanks

9Disallow: /media

10Disallow: /medical-research

11Disallow: /servlet/linkout

12Disallow: /na101/

13Disallow: /na101v1/

14Disallow: /na102/

15Disallow: /doi/mlt/

16Disallow: /topic

17Disallow: /author/

18Disallow: /doi/metrics/

19Disallow: /keyword/

20Disallow: /action/showPublications*ConceptID=*

21Disallow: /action/showPublications*alphabetRange=*

22Disallow: /doi/epdf/*

23Disallow: /pricing/*

24Disallow: /doi/epub/*

25Disallow: /authored-by/

26Disallow: /history/

27Allow: /action/showPublications

28Allow: /action/showXml

29Allow: /action/showCoverImage

30Allow: /action/showOpenGraphCoverImage

31Allow: /action/showGraphicalAbstractImage

32Allow: /doi/cover-img

33Allow: /action/journalInformation*aimsScope*

34Allow: /action/journalInformation*editorialBoard*

35Allow: /action/journalInformation*journalMetrics*

36Allow: /topic/articlecollection

37Allow: /topic/sections

38Allow: /action/journalInformation*societyInformation*

39Allow: /journals/*/about-this-journal

40Allow: /subjects/

41Allow: /action/showAxaArticles?journalCode=*

42Allow: /.well-known/tdmrep.json

43Crawl-delay: 1

45User-agent: facebookexternalhit

46User-agent: LinkedInBot

47User-agent: Twitterbot

48Allow: /

49Crawl-delay: 1

51User-agent: GPTBot

52Disallow: /

53Crawl-delay: 1

What do the bots actually get?

This page reads robots.txt, which states what tandfonline.com 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 tandfonline.com Test a path in the robots.txt tester

History

19 October 2026: first checked.

Questions

Does tandfonline.com block GPTBot?

Yes. tandfonline.com’s robots.txt disallows GPTBot from the whole site (line 52: Disallow: /). GPTBot is OpenAI’s crawler for training data; blocking it doesn’t affect ChatGPT search, which uses OAI-SearchBot. Checked 9 November 2026.

Does tandfonline.com block ClaudeBot?

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

Does tandfonline.com block Google-Extended?

No. tandfonline.com’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 tandfonline.com block PerplexityBot?

No. tandfonline.com’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 tandfonline.com?

Yes. tandfonline.com’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.