Who blocks AI · #434 in the Majestic Million
Does threads.com block AI crawlers?
Yes. threads.com’s robots.txt blocks all 19 AI crawlers we track, from GPTBot and ClaudeBot to PerplexityBot. It also blocks PetalBot, YandexBot and Baiduspider among search engines.
GPTBotBlockedOAI-SearchBotBlockedClaudeBotBlockedPerplexityBotBlockedGoogle-ExtendedBlockedCCBotBlocked- robots.txt
- www.threads.com/robots.txt · 390 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 | Partly blocked | line 142 · Disallow: /*/c/ line 143 · Disallow: /*/comments/ and 14 more | |
Bingbot | Microsoft | Partly blocked | line 68 · Disallow: /*/c/ line 69 · Disallow: /*/comments/ and 14 more |
DuckDuckBot | DuckDuckGo | Partly blocked | line 114 · Disallow: /accounts/ line 115 · Disallow: /activity/ and 10 more |
Applebot | Apple | Partly blocked | line 54 · Disallow: /accounts/ line 55 · Disallow: /activity/ and 10 more |
PetalBot | Huawei | Blocked | line 33 · Disallow: / under User-agent: PetalBot |
YandexBot | Yandex | Blocked | line 370 · Disallow: / under User-agent: * |
Baiduspider | Baidu | Blocked | line 370 · Disallow: / under User-agent: * |
AI search
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
OAI-SearchBot | OpenAI | Blocked | line 370 · Disallow: / under User-agent: * |
PerplexityBot | Perplexity | Blocked | line 30 · Disallow: / under User-agent: PerplexityBot |
Claude-SearchBot | Anthropic | Blocked | line 370 · Disallow: / under User-agent: * |
DuckAssistBot | DuckDuckGo | Blocked | line 370 · Disallow: / under User-agent: * |
Amazonbot | Amazon | Blocked | line 12 · Disallow: / under User-agent: Amazonbot |
YouBot | You.com | Blocked | line 370 · Disallow: / under User-agent: * |
AI training
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
GPTBot | OpenAI | Blocked | line 27 · Disallow: / under User-agent: GPTBot |
ClaudeBot | Anthropic | Blocked | line 21 · Disallow: / under User-agent: ClaudeBot |
Google-Extended | Blocked | line 24 · Disallow: / under User-agent: Google-Extended | |
CCBot | Common Crawl | Blocked | line 370 · Disallow: / under User-agent: * |
Applebot-Extended | Apple | Blocked | line 15 · Disallow: / under User-agent: Applebot-Extended |
GoogleOther | Blocked | line 370 · Disallow: / under User-agent: * | |
Meta-ExternalAgent | Meta | Blocked | line 370 · Disallow: / under User-agent: * |
Bytespider | ByteDance | Blocked | line 370 · Disallow: / under User-agent: * |
User-triggered fetchers
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
ChatGPT-User | OpenAI | Blocked | line 370 · Disallow: / under User-agent: * |
Claude-User | Anthropic | Blocked | line 370 · Disallow: / under User-agent: * |
Perplexity-User | Perplexity | Blocked | line 370 · Disallow: / under User-agent: * |
MistralAI-User | Mistral | Blocked | line 370 · Disallow: / under User-agent: * |
Meta-ExternalFetcher | Meta | Blocked | line 370 · Disallow: / under User-agent: * |
SEO tools
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
AhrefsBot | Ahrefs | Blocked | line 370 · Disallow: / under User-agent: * |
SemrushBot | Semrush | Blocked | line 370 · Disallow: / under User-agent: * |
MJ12bot | Majestic | Blocked | line 370 · Disallow: / under User-agent: * |
DotBot | Moz | Blocked | line 370 · Disallow: / under User-agent: * |
View www.threads.com/robots.txt · 390 lines
What do the bots actually get?
This page reads robots.txt, which states what threads.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 threads.com Test a path in the robots.txt tester
History
- 19 October 2026: first checked.
Questions
Does threads.com block GPTBot?
Yes. threads.com’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 threads.com block ClaudeBot?
Yes. threads.com’s robots.txt disallows ClaudeBot from the whole site (line 21: Disallow: /). ClaudeBot is Anthropic’s crawler for training data. Checked 9 November 2026.
Does threads.com block Google-Extended?
Yes. threads.com’s robots.txt disallows Google-Extended from the whole site (line 24: 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 threads.com block PerplexityBot?
Yes. threads.com’s robots.txt disallows PerplexityBot from the whole site (line 30: Disallow: /). PerplexityBot is the crawler that indexes pages for Perplexity’s answers. Checked 9 November 2026.
Can ChatGPT search find threads.com?
Not through its own crawler. threads.com’s robots.txt disallows OAI-SearchBot from the whole site (line 370: Disallow: /). OAI-SearchBot is the crawler behind ChatGPT search; blocking it keeps the site out of ChatGPT’s search answers. Checked 9 November 2026.