# Claim 21

OpenAI publishes the IP address ranges used by ChatGPT-User as a JSON file at https://openai.com/chatgpt-user.json.

entity: ChatGPT-User
field: publishes_ip_list
value: yes
statement: OpenAI publishes the IP address ranges used by ChatGPT-User as a JSON file at https://openai.com/chatgpt-user.json.
evidence_url: https://openai.com/chatgpt-user.json
evidence_quote: "Published IP addresses: https://openai.com/chatgpt-user.json" source dated 2026-09-11
method: vendor_doc
verified_at: 2026-09-13
confidence: high
status: current
supersedes: none

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