How Number Porting Works (You Keep Your Number)

Porting (formally, local number portability) is the process of moving a phone number from one provider to another. In the US it is your right: FCC rules require carriers to release a number to a new provider at the customer's request. Your number belongs to your business relationship, not to the old phone company.

The process, step by step

You authorize the new provider with a Letter of Agency (LOA) and a copy of a recent bill, so the account name, address, and numbers match exactly. The new provider submits the request; the losing carrier validates it and returns a firm order commitment (FOC) date. On that date, routing for the number flips to the new network. Mismatched account details are the number one cause of delays, so a current bill matters.

How long it takes and what goes down

Typical industry timelines: simple ports complete in one to a few business days once the paperwork matches, larger scheduled ports get a firm date, and the actual switch takes the line down for a couple of minutes at most. Costs are small, commonly a modest per-line fee. Nothing about your published number, your signage, or your Google listing changes.

Ports are also how businesses escape systems they have outgrown without re-printing anything: the number is the asset, and it travels.

Why ports get rejected

Nearly every rejection is a data mismatch: the account name, service address, or authorized signer on the port request differs from what the losing carrier has on file. Businesses accumulate these mismatches innocently, an owner's name on an account opened in 2009, an old suite number, a PIN nobody remembers setting. The fix is boring and effective: pull a current bill, copy the details exactly as printed, and resolve surprises with the old carrier before submitting.

Simple ports and complex ports

A simple port, one or a few numbers, one location, clean records, is where the next-business-day timelines live. Complex ports, dozens of numbers, multiple locations, toll-free numbers, or numbers tangled with bundled internet service, get scheduled with a firm date so everything moves together. Both are routine; the difference is choreography, and a provider that ports numbers daily will tell you which yours is within minutes of seeing the bill.

The pre-port checklist

• Get a current bill or customer service record from the existing carrier; it is the answer key.
• List every number you own, including fax lines, toll-free numbers, and forgotten tracking numbers; unlisted numbers get left behind and lost.
• Check for contract termination fees on the old service, and time the port accordingly.
• Do not cancel old service before the port completes; cancellation releases numbers to the pool.
• If a number rides on a bundled internet circuit, flag it; splitting them takes coordination the provider should own.