Who blocks AI · #1146 in the Majestic Million

robots.txt · checked 9 Nov 2026

Does t-online.de block AI crawlers?

Yes. t-online.de’s robots.txt blocks 7 of the 19 AI crawlers we track, including GPTBot, ClaudeBot, PerplexityBot and 4 more. Search engines such as Googlebot and Bingbot may crawl it.

GPTBotBlocked OAI-SearchBotAllowed ClaudeBotBlocked PerplexityBotBlocked Google-ExtendedPartly blocked CCBotBlocked

robots.txt: www.t-online.de/robots.txt · 77 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	Blocked	line 31 · `Disallow: /` under `User-agent: PerplexityBot`
`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 27 · `Disallow: /` under `User-agent: GPTBot`
`ClaudeBot`	Anthropic	Blocked	line 35 · `Disallow: /` under `User-agent: ClaudeBot`
`Google-Extended`	Google	Partly blocked	line 47 · `Disallow: /native/` line 48 · `Disallow: /auth/` and 21 more
`CCBot`	Common Crawl	Blocked	line 43 · `Disallow: /` under `User-agent: CCBot`
`Applebot-Extended`	Apple	Blocked	line 43 · `Disallow: /` under `User-agent: Applebot-Extended`
`GoogleOther`	Google	Allowed	no rule matches the home page
`Meta-ExternalAgent`	Meta	Blocked	line 43 · `Disallow: /` under `User-agent: Meta-ExternalAgent`
`Bytespider`	ByteDance	Blocked	line 43 · `Disallow: /` under `User-agent: Bytespider`

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.t-online.de/robots.txt · 77 lines

1User-agent: *

2Disallow: /native/

3Disallow: /auth/

4Disallow: /?artid

5Disallow: /preisvergleich/

6Disallow: /spiele/weihnachtsspiele/

7Disallow: /studiopreview_

8Disallow: /vid_1/

9Disallow: /,ei=

10Disallow: /,linkId=

11Disallow: /,pt=pictureEnlarge

12Disallow: /,pt=print

13Disallow: /,pt=self

14Disallow: /,tid=print

15Disallow: /,vv=P5

16Disallow: /,vv=enlarge

17Disallow: */tid_external_content_proxy/

18Disallow: /-/id_62530634/tid_tsr_iframe_loginbox/index

19Disallow: /-/id_62530634/tid_tsr_iframe_loginbox_buzz/index

20Disallow: /gtm.js

21Disallow: /metatag/

22Disallow: /ki-ratgeber/

23Disallow: /api/greenplayer/

24Disallow: /api/search/zero-input

26User-agent: GPTBot

27Disallow: /

28Allow: /finanzen/versichern-und-vorsorgen/

30User-agent: PerplexityBot

31Disallow: /

32Allow: /finanzen/versichern-und-vorsorgen/

34User-agent: ClaudeBot

35Disallow: /

36Allow: /finanzen/versichern-und-vorsorgen/

38User-agent: Applebot-Extended

39User-agent: Bytespider

40User-agent: CCBot

41User-agent: Meta-ExternalAgent

42User-agent: meta-externalagent

43Disallow: /

44Allow: /finanzen/versichern-und-vorsorgen/

46User-agent: Google-Extended

47Disallow: /native/

48Disallow: /auth/

49Disallow: /?artid

50Disallow: /preisvergleich/

51Disallow: /spiele/weihnachtsspiele/

52Disallow: /studiopreview_

53Disallow: /vid_1/

54Disallow: /,ei=

55Disallow: /,linkId=

56Disallow: /,pt=pictureEnlarge

57Disallow: /,pt=print

58Disallow: /,pt=self

59Disallow: /,tid=print

60Disallow: /,vv=P5

61Disallow: /,vv=enlarge

62Disallow: */tid_external_content_proxy/

63Disallow: /-/id_62530634/tid_tsr_iframe_loginbox/index

64Disallow: /-/id_62530634/tid_tsr_iframe_loginbox_buzz/index

65Disallow: /gtm.js

66Disallow: /metatag/

67Disallow: /ki-ratgeber/

68Disallow: /api/greenplayer/

69Disallow: /api/search/zero-input

70Allow: /

72# Legal notice: t-online.de expressly reserves the right to use its content for commercial text and data mining (§ 44 b UrhG).

73# The use of robots or other automated means to access t-online.de or collect or mine data without

74# the express permission of t-online.de is strictly prohibited.

75# t-online.de may, in its discretion, permit certain automated access to certain t-online.de pages,

76# If you would like to apply for permission to crawl t-online.de, collect or use data, please email t-online@stroeer.de

What do the bots actually get?

This page reads robots.txt, which states what t-online.de 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 t-online.de Test a path in the robots.txt tester

History

19 October 2026: first checked.

Questions

Does t-online.de block GPTBot?

Yes. t-online.de’s robots.txt disallows GPTBot from the whole site (line 27: 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 t-online.de block ClaudeBot?

Yes. t-online.de’s robots.txt disallows ClaudeBot from the whole site (line 35: Disallow: /). ClaudeBot is Anthropic’s crawler for training data. Checked 9 November 2026.

Does t-online.de block Google-Extended?

Partly. t-online.de’s robots.txt keeps Google-Extended out of some paths, such as /native/, and lets it crawl the rest. 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 t-online.de block PerplexityBot?

Yes. t-online.de’s robots.txt disallows PerplexityBot from the whole site (line 31: Disallow: /). PerplexityBot is the crawler that indexes pages for Perplexity’s answers. Checked 9 November 2026.

Can ChatGPT search find t-online.de?

Yes. t-online.de’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.