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Get a Temporary Phone Number for Authy

Authy is one of the most widely used two-factor authentication (2FA) apps in the world. Designed to add an extra layer of protection to online accounts, Authy generates time-based one-time passwords (TOTP) that are required in addition to your regular login credentials. It is commonly used to secure email accounts, cloud services, crypto exchanges, social networks, developer tools, and enterprise platforms.

Authy stands out for its multi-device synchronization, encrypted backups, and cross-platform support. Users can access their 2FA tokens on mobile devices, desktops, and browsers, making it a popular alternative to basic authenticator apps. Because Authy often becomes the key to accessing multiple critical accounts, securing the Authy account itself is extremely important.

To prevent unauthorized access and ensure proper account ownership, Authy requires phone number verification during registration and when adding new devices. However, many users prefer not to link their personal phone number to a security app — especially when setting up multiple Authy profiles, avoiding spam, or using Authy in regions with unreliable SMS delivery.

A temporary virtual phone number from 5SIM allows you to verify Authy safely and instantly without exposing your real mobile number.

Why Authy asks for phone verification

Authy uses phone numbers as a core identifier to link accounts, enable device synchronization, and prevent account hijacking.

Phone verification helps Authy:

  • confirm that each Authy account belongs to a real user
  • prevent unauthorized device additions
  • secure encrypted backups and token recovery
  • reduce the risk of SIM-based abuse or automated registrations
  • protect access to linked third-party services
  • support safe account recovery when devices are lost
  • maintain trust in a security-critical authentication system

    • Because Authy protects access to many other services, verifying the user at setup is essential.

    Pros of using temp numbers for Authy

    Using a temporary virtual phone number for Authy offers several important advantages:

  • Keeps your personal phone number private, even in security-related tools.
  • Helps you create additional Authy accounts for testing, work, or separate environments.
  • Avoids spam or SMS notifications on your primary SIM.
  • Allows setup even if your local carrier blocks international verification messages.
  • Helps bypass GEO restrictions or regional SMS delivery issues.
  • Useful for developers, security testers, and users managing multiple identities.
  • Eliminates the need to buy extra SIM cards just to register Authy.

    • With 5SIM, Authy verification becomes fast, controlled, and privacy-friendly.

    Is it safe to use a temporary number for Authy?

    Yes. Using a temporary number for Authy is safe because the number is used only to receive the one-time verification code (OTP) during setup.

    This approach is especially useful if you want to:

  • create an Authy account without using your personal phone number
  • avoid spam or unwanted security-related SMS
  • set up multiple Authy profiles without buying new SIM cards
  • bypass SMS delivery problems in certain regions

    • Temporary numbers provide flexibility while allowing you to securely activate Authy.

    How to buy virtual phone number for Authy

    If you want to buy numbers in order to receive SMS from Authy at a reasonable price, 5SIM offers a simple and reliable solution.

    Follow these steps:

    • Complete Authorization

      Sign up or Log in.

    • Top Up your Balance

      Add funds to your balance via any of the payment methods offered by our website; to access them, click on the profile icon, then click "Top up balance".

    • Select a Service

      In the left panel you can choose the service you need, may it be a website or an app, which you can receive an SMS code for. If the service you need is not listed, try using the service "Other". You can also reorganize the list and choose country first.

    • Select a Country

      It is recommended to choose the countries and operators with high OTP delivery rates—check out the sections "Statistics" and "Prices" to find the best options for the service you need.

    • Select an Operator and Click "Buy"

      The phone numbers' pricing depends on the operator you chose.

    • Apply the Phone Number that You Received

      • Press the copy button near the phone number, then paste the number where required.

      If necessary:

      • Click "Cancel" in case you do not wish to continue the verification process.

      • Click "Ban" if the number has already been used.

      If you didn't receive an OTP, you will be refunded automaticallyrarely it may take up to 15 minutes

    • Receive an SMS Code

      Once you purchase a virtual number, you can receive unlimited SMS codes for a certain website or app within 5-30 minutes. If a code is not delivered within five minutes, in some cases the order will be canceled automatically. Some service/country/operator combos can provide you with only one SMS code. Click here to learn more about SMS code delivery.

    If there’s an error that you cannot solve yourself, contact our support.

    FAQ

    Is it allowed to use a virtual number for Authy?

    Yes. Virtual numbers are commonly used for one-time verification, especially for security and testing purposes.

    Can I receive the OTP instantly?

    Most Authy verification SMS messages arrive within seconds. If the OTP does not arrive, the number cost will be automatically refunded to your 5SIM balance.

    Can I reuse the number?

    No. Temporary numbers are designed for a single verification only.

    What countries work best for Authy verification?

    Delivery success depends on the operator. 5SIM provides real-time statistics so you can choose the most reliable option.

    Can I use a virtual number for multiple Authy accounts?

    No. Each Authy account requires a separate verification number.

    Do virtual numbers work worldwide for Authy SMS?

    Yes. OTP codes are received online in your 5SIM dashboard from anywhere in the world.

    Use Authy Without Phone Number

    You can create and verify your Authy account without exposing your personal mobile number by using a secure virtual phone number from 5SIM. Receive OTP codes instantly, avoid linking your real SIM, and manage two-factor authentication with full flexibility and control.