Maritime Identification Digits (MID)
MIDs are three-digit identifiers ranging from 201 to 775 denoting the administration (country) or geographical area of the administration responsible for the ship station so identified. See the ITU Table of Maritime Identification Digits.
US MIDs allocated by the ITU and assigned by the FCC are 338, 366, 367, 368 and 369.
US regional MMSIs are generally, at present, not used by ships but may be used by coast stations and AIS Aids to Navigation Stations. They include:
- 303 Alaska
- 358 Puerto Rico
- 379 U.S. Virgin Islands
- 536 Northern Marianas islands
- 559 American Samoa
MMSI Summary Table - Click Here to Open as pdf | Click Here to Download as xlsx