A Letter of Authorization (LOA) is a document the new carrier needs to legally request the port from the current carrier. It identifies the customer of record and authorizes the port.
A standard LOA includes: the number(s) being ported, the customer name, the billing address on file with the current carrier, the account number, and the customer's signature.
For Kelir port-ins, we generate the LOA from the information you submit during onboarding. You sign once (digital signature is fine), and we submit on your behalf to the source carrier. For bulk ports (Team plans), one batch LOA covers all numbers in the submission.
LOA mismatches are the most common cause of port failures — name spelling, billing address differences, missing apartment numbers. The current carrier validates the LOA against their records, and exact matches matter. We tell you what failed and what to fix; resubmissions are free.