[フレーム] [フレーム]

ITU ITU's 160 anniversary

Connecting the world and beyond

WTDC 2025

Advanced Search

Maritime mobile Access and Retrieval System (MARS)

Rollup Image

Page Content 20

ITU MARS

MARS is a free of charge, online access and retrieval system that allows users to consult the information currently registered in the ITU’s maritime database system. This online system is updated in daily basis.

Ship Stations

Using specific search criteria, such as the ship name, call sign , MMSI, EPIRB Hex Id code, IMO or national registration number, users can retrieve operational information of ship stations that have been notified to the ITU Radiocommunication Bureau.

Coast Stations

Using specific search criteria, such as the station name, MMSI, transmitting frequencies and services provided, users can retrieve information of coast stations that have been notified to the ITU Radiocommunication Bureau.

SHIP STATIONS

Page Content 2

Retrieval of information >

How to notify >

COAST STATIONS

Page Content 3

Retrieval of information >

How to notify >

SAR AIRCRAFT STATIONS

Page Content 4

Retrieval of information >

How to notify >

AIS AIDS TO NAVIGATION

Page Content 5

Retrieval of information >

How to notify >

ACCOUNTING AUTHORITIES

Page Content 17

Retrieval of information >

AAICs by country
or geographical area >

More >

ADMINISTRATION INFORMATION

Page Content 16

Retrieval of information >

Latest notification dates >

Page Content 9

Page Content 10

Disclaimer
The data retrievable on this web site is based on information provided by the Administrations of ITU Member States. The ITU expressly disclaims any responsibility with respect to the use of this data and for the accuracy of the information contained in the database, including any defects, failures and omissions of the stations and auxiliary equipment described therein.

Page Content 18

Page Content 19

Quick links
General references
Maritime publications

Page Content 11

Download ship stations, coast stations, and
MMSI assigned to AtoN and SAR aircraft.
(Restricted Access)
Radio Regulations (Edition 2024)
Maritime Identification Digits (MID)
International Call Sign Series
Assignment and use of identities in the maritime mobile service (MMSI).
(Recommendation ITU-R M.585)
Standard form for ship station Licence -RECOMMENDATION 7 (REV.WRC-97)
Accounting Authorities
(Recommendation ITU-T D.90)
BR Maritime Circular Letters
(CM Series)

Page Content 12

Page Content 13

Click on the icon to order the publications

Other Codes and IDs

Page Content 15

Codes and IDs used in maritime services provided by other Organizations:
UNECE - UN/LOCODE
The "United Nations Code for Trade and Transport Locations" is commonly more known as "UN/LOCODE".
UN/LOCODE - Code List by Country
Comité International Radio-Maritime (CIRM)
Manufacturer IDs for devices using a freeform number identity

Amendments to Lists IV & V
FAQs

Page Content 6

Page Content 7

Page Content 8

The following link provides access to frequently asked questions, ordered by subject:

Frequently asked questions

Contact information

Page Content 14

International Telecommunication Union (ITU)
Place des Nations
1211 Geneva 20 Switzerland
Fax: +41 22 730 5785
Email: brmail@itu.int

Connecting the world and beyond

Maritime mobile Access and Retrieval System (MARS)

ITU MARS

​​​​​​​MARS is a free of charge, online access and retrieval system that allows users to consult the information currently registered in the ITU’s maritime database system. This online system is updated in daily basis.

Ship Stations

​Using specific search criteria, such as the ship name, call sign , MMSI, EPIRB Hex Id code, IMO or national registration number, users can retrieve operational information of ship stations that have been notified to the ITU Radiocommunication Bureau.​​

Coast Stations

​​​​Using specific search criteria, such as the station name, MMSI, transmitting frequencies and services provided, users can retrieve information of coast stations that have been notified to the ITU Radiocommunication Bureau.​​

SHIP STATIONS

COAST STATIONS

SAR AIRCRAFT STATIONS

AIS AIDS TO NAVIGATION

ACCOUNTING AUTHORITIES

ADMINISTRATION INFORMATION

Other Codes and IDs

Contact information

MARS is a free of charge, online access and retrieval system that allows users to consult the information currently registered in the ITU’s maritime database system. This online system is updated in daily basis.

Using specific search criteria, such as the ship name, call sign , MMSI, EPIRB Hex Id code, IMO or national registration number, users can retrieve operational information of ship stations that have been notified to the ITU Radiocommunication Bureau.

Using specific search criteria, such as the station name, MMSI, transmitting frequencies and services provided, users can retrieve information of coast stations that have been notified to the ITU Radiocommunication Bureau.