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Which Country's Phone Number Should You Use for OpenAI Registration? Supported Countries, Number Types, and Verification Timing
OpenAI standard registration no longer requires mandatory phone verification, but verification is still needed when creating the first API key on the API platform, triggering security risk controls, or logging into certain clients. You must use a real mobile number from an officially supported country (such as the US, UK, Japan, etc.). Mainland China, Hong Kong, Russia numbers, and VoIP virtual numbers like Google Voice are strictly prohibited. A single number can be used for API verification on at most 3 accounts.
2026 Cross-Border New Strategy: How NexSms SMS Verification System Helps Enterprises Grow Efficiently?
NexSms SMS verification system provides stable, high-delivery-rate virtual numbers for global account registration, essential for cross-border businesses in 2026.
