SMSFlashWhen OpenAI asks for a phone number, how to verify with a virtual number for development or testing, and what to do if the number is not accepted.
Why OpenAI asks for a phone
OpenAI may ask for a phone number for some sign-ups and for API platform access, to reduce abuse. Developers often want a separate number for a team or test account. An OpenAI virtual number receives that SMS code online.
Steps
- Pick OpenAI / ChatGPT in SMSFlash and choose a country with stock in a region where OpenAI is available.
- Enter the number on the OpenAI verification page with the right country code.
- Wait for the SMS; the code appears in your SMSFlash account.
- Enter the code to finish.
If the number is rejected
OpenAI limits how many accounts one number can verify and blocks some ranges. If you see an error such as "this number is already in use" or "not supported", cancel the order for a refund and try another country. Also make sure the country of the number is one where the service is offered.
Tips for developers
- Use one stable account per project, and add teammates through the organisation settings instead of making many accounts.
- Protect API keys and rotate them if leaked.
- If you build tools that need several AI accounts, check each provider’s terms first. Other AI services such as Claude have their own rules.
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Frequently asked questions
Can I verify ChatGPT with a virtual number?
Often yes, if OpenAI accepts the number. If it does not, cancel for a refund and try another country.
Will I need the number again?
OpenAI usually asks only once, but keep your login secure with a strong password or a Google/Microsoft sign-in so you do not depend on the number.
Which country works best for OpenAI?
Choose a country where OpenAI is available and that has numbers in stock. Acceptance changes over time, so switch if one is refused.