What Is Phone Number Porting?
Phone number porting is the process of transferring your existing phone number from one carrier to another. Thanks to FCC regulations, you have the legal right to port your number — carriers cannot refuse a legitimate port request.
Whether you've just purchased a premium number from GreatNumber or are switching carriers, understanding the porting process ensures a smooth transition.
How Number Porting Works
The Basic Process
- Initiate with the new carrier: Contact your new carrier and request to port your number
- Provide your details: Account number, PIN, authorized name, billing address from your current carrier
- New carrier submits the port: They file the request with your current carrier
- Verification period: Your current carrier verifies the information (1-3 business days for wireless, 2-10 for landline)
- Port completes: Your number is active on the new carrier
Porting Timeline
- Wireless to wireless: Typically 2-4 hours, sometimes same day
- Landline to wireless: 3-10 business days
- Wireless to VoIP: 1-3 business days
- Toll-free numbers: 7-14 business days
What You Need Before Porting
Gather this information from your current carrier before starting:
- Account number: Found on your bill or by calling your carrier
- Account PIN/password: The security PIN on your account
- Authorized account name: The name on the account (must match exactly)
- Billing address: The address on file with your current carrier
- Current phone number: The number you want to port
Common Porting Problems and Solutions
Problem: Port Rejected for "Information Mismatch"
Solution: The most common issue. Double-check that your account name, PIN, and address match your current carrier's records exactly. Even a small difference (like "St." vs "Street") can cause a rejection.
Problem: Current Carrier Stalling
Solution: Carriers sometimes try to delay ports to retain customers. By law, they cannot refuse a legitimate port. If they stall beyond the standard timeline, file a complaint with the FCC.
Problem: Number Goes Temporarily Offline
Solution: Brief service interruptions during porting are normal (usually minutes, not hours). Schedule your port during off-peak hours if possible.
Porting a Number from GreatNumber
When you purchase a number from GreatNumber, we provide:
- Full porting authorization and documentation
- Account details needed for the port request
- Support throughout the porting process
- Confirmation once the port is complete
Tips for a Smooth Port
- Don't cancel your old service first: Your old account must be active for the port to work
- Keep your old phone on: You may need to confirm the port via your current number
- Plan for downtime: Schedule ports for low-traffic periods
- Test after porting: Make test calls to ensure everything works
Ready to Get a New Number?
Browse GreatNumber's marketplace to find your ideal number. We support seamless porting to any major US carrier.



