Use TwinNumber with Ramp.
Running cards and spend on Ramp for your U.S. company from abroad? Use a real U.S. mobile number for the SMS codes Ramp sends at sign-in and before sensitive changes.
- What we tested
- Receiving SMS verification codes
- Line type
- Mobile
- Last tested
- Oct 22, 2026
We re-test Ramp regularly and update this date.
What Ramp uses your number for
- Signing in with your password on a new or untrusted device always asks for MFA, and the phone method texts you a code.
- Ramp may ask you to verify again before sensitive actions, such as viewing payment details or changing settings.
- A new phone number is confirmed with a 6-digit code sent to it by SMS.
Add your TwinNumber on Ramp
- 01
Open Personal settings
Go to Settings > Personal settings, or select Profile (your initials, top right) and then Personal settings.
- 02
Edit the number
Click Edit my profile (or Change next to your phone number) and enter the new one, with the country code if it is international.
- 03
Confirm with the code
Enter the verification code Ramp texts to the new number.
- 04
Admins can start it
An admin can update an employee from Company > People, but the employee still has to confirm the new number.
Why the line type matters
Financial services 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 →
Mercury
Wise
Relay
PayoneerQuestions
What if Ramp's texts stop arriving?
Ramp sends codes from the short code 447-267. If you ever texted STOP to it, SMS is turned off for your number; text START to 447-267 to turn it back on.
I can't get codes on my old number. How do I get back into Ramp?
On the MFA screen, tap Having trouble? and choose I can't receive verification codes sent to my phone number. Ramp emails you a link that expires after 15 minutes, then you enter the new number and the code sent to it.
Who can apply for Ramp in the U.S.?
A U.S.-registered corporation, LLC or LP with an EIN, at least $25,000 in a linked U.S. business bank account, most operations in the U.S. and a physical U.S. address (not a virtual office or registered agent). An owner without an SSN can apply with a foreign passport and proof of address; the phone number never replaces that identity check.
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 Ramp?
No. We test our numbers with popular services and publish the results. Ramp 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.
Ready for Ramp codes?
Join the waitlist and be among the first to get your U.S. mobile number.