LOA (Letter of Authorization) — Letter of Authorization
What is LOA (Letter of Authorization)?
An LOA (Letter of Authorization) is the signed document a phone number's current owner provides to authorize a new carrier to port that number away from its existing provider, proving the request is legitimate and consented to rather than a fraudulent or mistaken port attempt. Carriers require an LOA's details — the account holder's name, billing address, and account number — to match the losing carrier's records exactly, or the port request is rejected.
More detail
An LOA typically must be signed by an authorized representative of the account and include the exact numbers being ported, the current service address, and the account number on file with the losing carrier.
A mismatched or incomplete LOA is one of the most common reasons a number port gets rejected or delayed, since the losing carrier compares it directly against its own account records.
Frequently asked
- Why did my number port get rejected?
- The most common cause is a mismatch between the LOA's details — account name, billing address, account number — and what the losing carrier has on file; even a small discrepancy, like an abbreviated business name, can trigger a rejection.
- Who needs to sign the LOA?
- An authorized representative of the account the number is registered to — typically whoever is listed as the account holder or an authorized contact with the current (losing) carrier.
See also
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