Three checks matter more than the slogan. The service name must match the app that will send the text. The country must be United States if the app asked for a US number. The duration must match whether you need one code or later texts on the same line.
The overview is USA SMS verification. One-code orders are the temporary US number. Longer access is the rental. Prices for all three live on pricing.
“USA number for OTP” shows up in keyword tools as an estimate. It does not mean every US app is stocked. If the row is missing, wait or pick a service that is listed. Delivery is not guaranteed, and a short-term order with no SMS returns the wallet charge under the timeout rules.