EARLY ACCESSTwinNumber is launching soon. Reserve your spot for a U.S. mobile number.

Use TwinNumber with Booking.com.

Using Booking.com for a trip to the U.S.? Put a real U.S. mobile number on your account so sign-in codes and trip messages reach your browser, wherever you are.

Tested and working
What we tested
Receiving SMS verification codes
Line type
Mobile
Last tested
Oct 12, 2026

We re-test Booking.com regularly and update this date.

What Booking.com uses your number for

  • Depending on the reservation, Booking.com may ask for your telephone number when you book.
  • Your contact details can be shared with the property or provider you book.
  • Booking.com may contact you by phone call or text message.

Add your TwinNumber on Booking.com

  1. 01

    Sign in

    Sign in to Booking.com on the website or in the app.

  2. 02

    Open your account

    Open your account settings and find the phone number in your personal details.

  3. 03

    Save the new number

    Enter the new number with its country code and save it.

Why the line type matters

Travel and ride apps often check whether a number is mobile, landline or VoIP before sending a code, and many turn VoIP numbers away. TwinNumber numbers are registered as mobile.

Why banks reject Google Voice →

Questions

Will the property see my phone number?

It can. Booking.com's privacy statement says the details it shares with a trip provider can include your name and contact details. With a TwinNumber on your booking, the property gets your U.S. number, not your personal one.

Does Booking.com text guests?

Booking.com says it may contact you by phone call or text message, depending on the contact details you've shared. Promotional messages can also come by SMS or WhatsApp if you've agreed to them.

Do I need to live in the U.S.?

No. TwinNumber works from 150+ countries with just a browser and an internet connection.

Is TwinNumber affiliated with Booking.com?

No. We test our numbers with popular services and publish the results. Booking.com is a trademark of its owner.

What if a code doesn't arrive?

Request a new code, then check your inbox and notification settings. If it keeps failing, contact us and we'll look into it.

EARLY ACCESS

Ready for Booking.com codes?

Join the waitlist and be among the first to get your U.S. mobile number.

From $8.33/mo, billed yearly · Cancel anytime · Nothing to install
EARLY ACCESS

TwinNumber is launching soon

Join the waitlist to be among the first to get your private U.S. number.