ChatGPT-User

OpenAI · User-triggered fetcher

Visits a page when a ChatGPT or Custom GPT user asks about it (also GPT Actions). It does not crawl automatically.

OpenAI says that because these visits are user-initiated, robots.txt rules may not apply.

User-agent contains

ChatGPT-User

robots.txt token

ChatGPT-User

Respects robots.txt

Operator docs don't say / may not apply

Official IP ranges

234 prefixes

How to verify ChatGPT-User

Matching the user agent isn't enough, because any client can send it. A real ChatGPT-User request comes from an IP address inside OpenAI's published list:

• https://openai.com/chatgpt-user.json
  234 prefixes · list dated 2026-10-20 · fetched 2026-10-21

The quickest way to check a whole log is our free log checker. It runs in your browser and splits ChatGPT-User requests into real and fake.

104.208.184.192/28
104.210.139.192/28
104.210.139.224/28
128.85.198.32/28
13.65.138.112/28
13.67.72.16/28
13.71.2.208/28
13.76.116.80/28
13.76.32.208/28
13.83.167.128/28
13.83.237.176/28
132.196.82.48/28
134.138.52.128/28
134.138.52.16/28
134.138.52.64/28
134.138.52.96/28
134.138.57.176/28
134.138.57.64/28
134.138.57.80/28
134.138.58.32/28

Block or allow ChatGPT-User in robots.txt

User-agent: ChatGPT-User
Disallow: /

Use Allow: / instead to explicitly permit it, or build a full file with the AI robots.txt generator. robots.txt is a request, not a lock: it only works for bots that honor it, and only real ChatGPT-User traffic would.

Source: OpenAI documentation