How long does it take to port a fax number?

Fax number porting typically takes 7 to 15 business days for standard transfers. Complex ports involving toll-free numbers or multiple lines can take 4 to 6 weeks. Your new provider will give you a temporary number to use during the transition.

Can I keep my fax number when switching providers?

Yes. Under FCC regulations, you have the right to port your fax number to any compatible provider. The process requires a Letter of Authorization and a recent bill from your current carrier.

How much does fax number porting cost?

Porting costs range from free to $25 depending on the provider. Some services like mFax include porting at no extra charge with a business plan. Your old provider cannot charge you a fee to release the number.

What documents do I need to port a fax number?

You need a completed Letter of Authorization (LOA), a recent phone or fax bill (within 30 days) showing account details, and your account number with the current provider. The new provider supplies the LOA form.

Can I port a landline fax number to an online fax service?

Yes. You can port a traditional landline fax number to an online fax service. The number must be active during the transfer, and the account information on your LOA must exactly match your carrier's records.

Fax Number Porting: How to Transfer Your Fax Number

Fax number porting lets you keep your existing fax number when switching providers. Learn the step-by-step process, costs, timelines, and how to avoid common porting mistakes.

Frequently Asked Questions

How long does it take to port a fax number?: Fax number porting typically takes 7 to 15 business days for standard transfers. Complex ports involving toll-free numbers or multiple lines can take 4 to 6 weeks. Your new provider will give you a temporary number to use during the transition.
Can I keep my fax number when switching providers?: Yes. Under FCC regulations, you have the right to port your fax number to any compatible provider. The process requires a Letter of Authorization and a recent bill from your current carrier.
How much does fax number porting cost?: Porting costs range from free to $25 depending on the provider. Some services like mFax include porting at no extra charge with a business plan. Your old provider cannot charge you a fee to release the number.
What documents do I need to port a fax number?: You need a completed Letter of Authorization (LOA), a recent phone or fax bill (within 30 days) showing account details, and your account number with the current provider. The new provider supplies the LOA form.
Can I port a landline fax number to an online fax service?: Yes. You can port a traditional landline fax number to an online fax service. The number must be active during the transfer, and the account information on your LOA must exactly match your carrier's records.