SMS-Activate is one of the best-known activation marketplaces. You pick a service and a country, receive a temporary number, wait for one verification code, and the number goes back to the pool. It also offers short-term rentals and an API, which is why resellers and automation tools have integrated it for years.
That model is efficient for exactly one thing: getting a single code quickly. It was not designed to give you a number you still control next month. When an app later asks you to confirm a login, reset a password or re-verify after a device change, an activation number is typically no longer available to you — and it may already be assigned to someone else.
PhoneBorn approaches the problem from the other side. A plan gives you a real mobile number that stays assigned to you for as long as you renew, with unlimited incoming SMS and calls plus 500 outgoing SMS and 1,000 calling minutes a month. For true one-off codes, PhoneBorn also sells single-use OTP numbers that are refunded automatically if no code arrives.
Details below reflect SMS-Activate's public information as of 2026; check the provider's current terms and availability before you decide. SMS-Activate is a trademark of its owner, and PhoneBorn is not affiliated with it.