Pick a number type, choose a service, read the SMS. Pay per code, refunded if it never arrives.
Our lowest price. High-quality VoIP numbers that work for the large majority of signups.
from $0.50 / code
Priced higher, delivers higher. A brand-new, non-VoIP AT&T carrier number accepted by virtually every service, about as close to a guaranteed code as it gets.
from $0.99 / code
Every number is single-use. Once it receives your code it is released back to the carrier, never resold or recycled to another customer.
1 match for "binance"
An OTP, or one-time password, is the short numeric code a service texts to a phone number to prove you control it, usually as part of signup or two-factor login. Most services will not let you finish creating an account without receiving and entering that code, which is why a working phone number is the first thing you need.
On asms.ai the flow is three steps. First, search the list above for the service you are verifying, such as WhatsApp, Telegram, or any of the 1,800+ services in stock. Second, pick a number type: VoIP High Quality at $0.50 per code, or Non-VoIP AT&T at $0.99 per code (Telegram and WhatsApp are $1.50 on the Non-VoIP AT&T pool). Third, a private number is allocated to you. Paste it into the service, and the SMS with the code appears in your inbox, usually within seconds.
VoIP High Quality numbers cover the large majority of signups at the lowest price, so they are the right default when you are not sure which to choose. Non-VoIP AT&T numbers are real carrier lines rather than VoIP, which matters for services that run strict checks and reject VoIP numbers outright, including banks and some messaging apps. If a code does not arrive, you are refunded automatically, so you only ever pay for codes that actually land.
Usually within seconds of the service sending it. The code appears live in the number's inbox, with nothing to install.
VoIP High Quality is $0.50 per code and works for the large majority of signups. Non-VoIP AT&T is a real carrier line, $0.99 per code (Telegram and WhatsApp are $1.50), for services that reject VoIP numbers outright, such as banks and some messaging apps.
You are refunded automatically. You only pay for codes that actually arrive, with no subscription and no wasted top-up.
Yes. A clean REST API and a native MCP server let scripts and AI agents pick a service, request a number, and read the code on their own.
No. Every number is single-use. Once it receives your code it is released back to the carrier, never resold or recycled to another customer.