US verification on ASMS.ai: the VoIP High Quality pool
Most people comparing TextVerified alternatives want a US number for a US app or website. On the /otp page, choose the service you are verifying and the VoIP High Quality pool. You see the price and how many numbers are in stock before you pay.
You get a +1 number with an inbox only you can read. Enter it on the service, request the code, and it appears on your order page. If no code arrives, the order is refunded automatically, so trying the cheapest pool first costs you nothing when it does not work.
If you need a +44 number instead, the United Kingdom pool on the same page uses real UK mobile numbers.
When a US service rejects VoIP: non-VoIP rentals
Some services check the type of number you enter and refuse VoIP lines. Banks, payment apps and some messaging apps are common examples. When that happens, requesting the code again on the same kind of number will not change the answer.
A private rental is a dedicated non-VoIP number, from $4.99, for 1 day up to 12 months depending on the country, with unlimited SMS and a private inbox. Strict services are more likely to accept it. If it is refused, you can cancel between 5 and 120 minutes after renting, before any SMS arrives, for a refund.
The honest order to try things in: VoIP High Quality first, because it is cheapest and a failed code is free; a UK number if the service is UK based or wants +44; then a non-VoIP rental for the strict ones.
TextVerified free and free text verified: how free works here
ASMS.ai has free numbers that need no account and no payment. They are shared: the inbox is public, and anyone opening the same number sees the same texts. Most are UK numbers, with Netherlands, Finland and a few other countries.
A free number is fine for a one-off, low-stakes code. Popular apps often already know shared numbers, so they may reject one or say it is taken.
Do not use a free number for an account that holds money or that you want to keep. Whoever can read the texts can receive the reset code.
One code or a number you keep
A per-code number is for a single verification. Once the order is done, the number is not yours to use again.
If the account matters, think about what happens next month. Many services ask for the code again when you log in on a new device or reset a password. With a rental, the same number is still yours, so you can receive that code. For any account you want to keep, a rental is the safer choice.
What to compare when choosing a US verification service
Start with what happens on failure: is a missing code refunded, and do you have to ask. On ASMS.ai it is automatic. Then privacy: can anyone else read the inbox. Paid numbers here are private; free ones are public.
Look at number types. A service that offers both VoIP and non-VoIP numbers lets you start cheap and step up only when you need to. Check developer options if you automate: ASMS.ai has a REST API and an MCP server.
Finally, the practical things: which payment methods are accepted (ours are on the top-up page), how you reach support, and how long the service has been around. ASMS.ai has been online since 2018.
How to switch to ASMS.ai
Create an ASMS.ai account and top up your wallet. On the /otp page, choose your service and the VoIP High Quality pool, check the price, and order. Enter the +1 number on the service and read the code on your order page.
If the service rejects VoIP, open the /numbers page and rent a non-VoIP number instead.