Who blocks AI · #1031 in the Majestic Million

robots.txt · checked 9 Nov 2026

Does mega.nz block AI crawlers?

Yes. mega.nz’s robots.txt blocks all 19 AI crawlers we track, from GPTBot and ClaudeBot to PerplexityBot. It also blocks Googlebot, Bingbot and 5 more among search engines.

GPTBotBlocked OAI-SearchBotBlocked ClaudeBotBlocked PerplexityBotBlocked Google-ExtendedBlocked CCBotBlocked

robots.txt: mega.nz/robots.txt · 116 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	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Bingbot`	Microsoft	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`DuckDuckBot`	DuckDuckGo	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Applebot`	Apple	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`PetalBot`	Huawei	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`YandexBot`	Yandex	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Baiduspider`	Baidu	Blocked	line 14 · `Disallow: /` under `User-agent: *`

AI search

Bot	Operator	robots.txt	Deciding line
`OAI-SearchBot`	OpenAI	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`PerplexityBot`	Perplexity	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Claude-SearchBot`	Anthropic	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`DuckAssistBot`	DuckDuckGo	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Amazonbot`	Amazon	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`YouBot`	You.com	Blocked	line 14 · `Disallow: /` under `User-agent: *`

AI training

Bot	Operator	robots.txt	Deciding line
`GPTBot`	OpenAI	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`ClaudeBot`	Anthropic	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Google-Extended`	Google	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`CCBot`	Common Crawl	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Applebot-Extended`	Apple	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`GoogleOther`	Google	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Meta-ExternalAgent`	Meta	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Bytespider`	ByteDance	Blocked	line 14 · `Disallow: /` under `User-agent: *`

User-triggered fetchers

Bot	Operator	robots.txt	Deciding line
`ChatGPT-User`	OpenAI	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Claude-User`	Anthropic	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Perplexity-User`	Perplexity	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`MistralAI-User`	Mistral	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`Meta-ExternalFetcher`	Meta	Blocked	line 14 · `Disallow: /` under `User-agent: *`

SEO tools

Bot	Operator	robots.txt	Deciding line
`AhrefsBot`	Ahrefs	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`SemrushBot`	Semrush	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`MJ12bot`	Majestic	Blocked	line 14 · `Disallow: /` under `User-agent: *`
`DotBot`	Moz	Blocked	line 14 · `Disallow: /` under `User-agent: *`

View mega.nz/robots.txt · 116 lines

1User-agent: Twitterbot

2Allow: /file

3Allow: /folder

4Allow: /chat

5Allow: /objectstorage

7User-agent: facebookexternalhit

8Allow: /file

9Allow: /folder

10Allow: /chat

11Allow: /objectstorage

13User-agent: *

14Disallow: /

15Allow: /$

16Allow: /start

17Allow: /business

18Allow: /mobile

19Allow: /ios

20Allow: /android

21Allow: /sync

22Allow: /cmd

23Allow: /extensions

24Allow: /chrome

25Allow: /edge

26Allow: /firefox

27Allow: /bird

28Allow: /desktop

29Allow: /secureboot

30Allow: /favicon

31Allow: /manifest.json

32Allow: /*.css

33Allow: /*.js

34Allow: /*.json

35Allow: /*.png

36Allow: /*.svg

37Allow: /nas

38Allow: /help

39Allow: /about

40Allow: /developers

41Allow: /uwp

42Allow: /linux

43Allow: /pro

44Allow: /resellers

45Allow: /corporate

46Allow: /contact

47Allow: /blog

48Allow: /security

49Allow: /collaboration

50Allow: /securechat

51Allow: /cookie

52Allow: /storage

53Allow: /credits

54Allow: /terms

55Allow: /privacy

56Allow: /copyright

57Allow: /takedown

58Allow: /gdpr

59Allow: /sourcecode

60Allow: /sdk

61Allow: /doc

62Allow: /refer

63Allow: /wp$

64Allow: /downloadapp

65Allow: /register

66Allow: /recovery

67Allow: /dev

68Allow: /disputenotice

69Allow: /login

70Allow: /achievements

71Allow: /registerb

72Allow: /register

73Allow: /cookie

74Allow: /dispute

75Allow: /sdkterms

76Allow: /objectstorage

77Allow: /Mega_Transparency_Report*

78Allow: /*sitemap*

79Allow: /ads.txt

80Allow: /lang_*

81Allow: /?ar

82Allow: /?br

83Allow: /?cn

84Allow: /?ct

85Allow: /?de

86Allow: /?en

87Allow: /?en-ph

88Allow: /?es

89Allow: /?fr

90Allow: /?id

91Allow: /?it

92Allow: /?ja

93Allow: /?jp

94Allow: /?ko

95Allow: /?kr

96Allow: /?nl

97Allow: /?pl

98Allow: /?pt

99Allow: /?pt-br

100Allow: /?ro

101Allow: /?ru

102Allow: /?ru-mo

103Allow: /?th

104Allow: /?vn

105Allow: /?vi

106Allow: /?zh

107Allow: /?zh-cn

108Allow: /?zh-hk

109Allow: /?zh-sg

110Allow: /?zh-tw

111Allow: /?nz=1

112

113sitemap: https://mega.nz/sitemap.xml

114sitemap: https://cms2.mega.nz/unsigned/sitemap-help.xml

115sitemap: https://cms2.mega.nz/unsigned/blog.xml

116

What do the bots actually get?

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

History

19 October 2026: first checked.

Questions

Does mega.nz block GPTBot?

Yes. mega.nz’s robots.txt disallows GPTBot from the whole site (line 14: 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 mega.nz block ClaudeBot?

Yes. mega.nz’s robots.txt disallows ClaudeBot from the whole site (line 14: Disallow: /). ClaudeBot is Anthropic’s crawler for training data. Checked 9 November 2026.

Does mega.nz block Google-Extended?

Yes. mega.nz’s robots.txt disallows Google-Extended from the whole site (line 14: Disallow: /). 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 mega.nz block PerplexityBot?

Yes. mega.nz’s robots.txt disallows PerplexityBot from the whole site (line 14: Disallow: /). PerplexityBot is the crawler that indexes pages for Perplexity’s answers. Checked 9 November 2026.

Can ChatGPT search find mega.nz?

Not through its own crawler. mega.nz’s robots.txt disallows OAI-SearchBot from the whole site (line 14: Disallow: /). OAI-SearchBot is the crawler behind ChatGPT search; blocking it keeps the site out of ChatGPT’s search answers. Checked 9 November 2026.