tandfonline.com: what it tells AI crawlers

On 27 October 2026, tandfonline.com's robots.txt fully blocked GPTBot.

Last verified 2026-10-28 03:59 UTC (daily run of 2026-10-27). Proof for that day.

Panel
top 1k (Tranco)
robots.txt
ok (HTTP 200) · https://www.tandfonline.com/robots.txt
unchanged since 2026-10-26 · sha256 70adb5768df9af8c… · view as recorded
The * group
allows applies to every agent without its own group

Per AI bot, 2026-10-27

User agentVerdictHow
GPTBotblocksnamed in its own group
OAI-SearchBotallowsthrough the * group
ChatGPT-Userallowsthrough the * group
ClaudeBotallowsthrough the * group
Claude-SearchBotallowsthrough the * group
Claude-Userallowsthrough the * group
PerplexityBotallowsthrough the * group
Perplexity-Userallowsthrough the * group
Googlebotallowsthrough the * group
Google-Extendedallowsthrough the * group
Applebot-Extendedallowsthrough the * group
CCBotallowsthrough the * group
Bytespiderallowsthrough the * group
Meta-ExternalAgentallowsthrough the * group
Amazonbotallowsthrough the * group
facebookexternalhitallowsnamed in its own group

Other signals

Publishes /llms.txtnot observed
Publishes /ai.txtnot observed
Publishes /.well-known/tdmrep.jsonnot observed
Reserves TDM rights (TDMRep file, header or meta)not observed
Declares Content Signals (robots.txt or header)not observed
Says ai-train=no in a Content Signalnot observed
Points to an RSL licence (robots.txt License line or Link header)not observed
Answers with an x402 payment offer (lower bound: only the homepage is probed)not observed
Answers HTTP 402 Payment Required (lower bound: only the homepage is probed)not observed
Sends noai / noimageai directivesnot observed
Refused our fetcher (403 / challenge)no

robots.txt as recorded sha256 0667b26be1b8b2e0…

Sitemap: https://www.tandfonline.com/sitemap-index-1.xml
User-agent: *
Disallow: /action
Disallow: /help
Disallow: /search
Disallow: /feedback
Disallow: /rss
Disallow: /page/account-confirmation-thanks
Disallow: /media
Disallow: /medical-research
Disallow: /servlet/linkout
Disallow: /na101/
Disallow: /na101v1/
Disallow: /na102/
Disallow: /doi/mlt/
Disallow: /topic
Disallow: /author/
Disallow: /keyword/
Disallow: /action/showPublications*ConceptID=*
Disallow: /action/showPublications*alphabetRange=*
Allow: /action/showPublications
Allow: /action/showXml
Allow: /action/showCoverImage
Allow: /sda/journalIssueList/
Allow: /action/showOpenGraphCoverImage
Allow: /doi/cover-img
Allow: /action/journalInformation*aimsScope*
Allow: /action/journalInformation*editorialBoard*
Allow: /action/journalInformation*journalMetrics*
Allow: /topic/articlecollection
Allow: /topic/sections

Crawl-delay: 1

robots.txt versions

FromThroughStateVersion
2026-10-262026-10-27ok 20070adb5768df9

Timeline of changes

DateWhat changed
No changes since the first observation (2026-10-26).

Reconstructed history (Common Crawl)

From Common Crawl's robots.txt captures: what CCBot was served, one crawl per quarter. A separate series from the daily observations above; a 403 here means Common Crawl was refused, not this ledger.

CrawlHostStateGPTBotOAI-SearchBotChatGPT-UserClaudeBotClaude-SearchBotClaude-UserPerplexityBot
2026-09-21 CC-MAIN-2026-39www.tandfonline.comok viewblocksallowsunknownallowsallowsunknownallows
2025-09-15 CC-MAIN-2025-38tandfonline.comfetch-blockedunknownunknownunknownunknownunknownunknownunknown
2024-09-16 CC-MAIN-2024-38www.tandfonline.comok viewblocksallowsunknownallowsallowsunknownallows
2023-10-02 CC-MAIN-2023-40www.tandfonline.comok viewblocksallowsunknownallowsallowsunknownallows
2022-10-03 CC-MAIN-2022-40www.tandfonline.comok viewallowsallowsunknownallowsallowsunknownallows
2021-09-27 CC-MAIN-2021-39www.tandfonline.comok viewallowsallowsunknownallowsallowsunknownallows
2020-09-28 CC-MAIN-2020-40www.tandfonline.comok viewallowsallowsunknownallowsallowsunknownallows
2019-09-23 CC-MAIN-2019-39tandfonline.comok viewallowsallowsunknownallowsallowsunknownallows
2018-09-24 CC-MAIN-2018-39tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2017-10-23 CC-MAIN-2017-43tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2017-09-25 CC-MAIN-2017-39tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2017-07-24 CC-MAIN-2017-30tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2017-04-24 CC-MAIN-2017-17tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2017-01-23 CC-MAIN-2017-04tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2016-10-03 CC-MAIN-2016-40tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks
2016-09-05 CC-MAIN-2016-36tandfonline.comok viewblocksblocksunknownblocksblocksunknownblocks

Evidence

Every daily observation of tandfonline.com is a leaf in that day's Merkle tree. Proof of the robots.txt line for 2026-10-27: audit path (JSON), day root and OpenTimestamps proof (complete (bitcoin block 973493)).

API: https://infrarabbit.com/crawlers/api/v1/policy/tandfonline.com