The characters prominently displayed on baggage tags attached at airport check-in desks are an example of a way these codes are used. The assignment of these codes is governed by IATA Resolution 763, and it is administered by the IATA's headquarters in Montreal.

Where can I find my IATA number?

Go online to view the IATA check-a-code Web page. Type in the agent's unique verification or personnel registration number. The verification number should be10 digits and the personnel number is six digits. Only a United States travel agent should have a personnel registration number.

Do all airports have IATA codes?

The IATA is the International Airline Transport Association. The ICAO is the International Civil Aviation Organization. While you are correct, the IATA does not have more than 17500 codes, their primary concern isn't creating codes for every airport including grass strips and private airfields.