Frequently asked questions

Last updated: 30 October 2026

What is OTP Bolt?

OTP Bolt rents real phone numbers so you can receive one-time passwords (OTP) and SMS verification codes online. Pick a country and an app, get a temporary number, and the code appears in a live inbox — usually within seconds.

How much does a temporary number cost?

Prices start at $0.15 per code and depend on the country and app. You see the exact price before renting, and if no SMS arrives during the rental window you're refunded automatically.

Do you have an API for developers?

Yes. Generate an API key in the dashboard and use the REST API to rent numbers, poll for codes, request another SMS and cancel activations — ideal for QA automation and CI pipelines.

Can I keep a number?

Yes — My Numbers gives you a dedicated US or Canada number with an unlimited SMS inbox and browser calling, on flat prepaid terms from one week to twelve months.

How do I pay?

Top up your USD wallet by card (Stripe, with 3-D Secure) or with USDT/USDC on Tron, Polygon, BNB Chain, Base or Solana. Wallet credit is applied automatically at checkout.

Which countries are supported?

Instant OTP numbers are available in 200+ countries including the United States, United Kingdom, India, Indonesia, Brazil and Germany. Dedicated numbers are self-serve in the US and Canada.

Is using a temporary number allowed?

Receiving SMS on a rented number is lawful in most countries, but each app has its own terms. OTP Bolt is for testing, privacy and legitimate signups — never for fraud or evading bans.

Still curious? Read the guides or contact us.