
The ITU letter codes are a unique set of identifiers assigned to countries by the International Telecommunication Union (ITU). These codes are used to represent countries in international telecommunications.
The ITU letter codes are two letters long and are assigned based on geographical or linguistic criteria. For example, the code for the United States is "US" and for Canada is "CA".
The ITU letter codes are used in various applications, including international telephony and internet routing. They help to ensure that phone calls and internet traffic are directed to the correct country.
The ITU letter codes can be found in the list of ITU letter codes by country, which includes over 200 countries and territories.
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What are ITU Letter Codes?
The International Telecommunication Union (ITU) uses a system of letter codes to identify member countries and other areas around the world. These codes are used for radiocommunication purposes.
Eight countries have single-letter codes, including B, D, E, F, G, I, J, and S. The rest of the countries have three-letter codes.
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The ITU also designates codes for non-member states, areas, organizations, and special purposes. For example, the code "ATA" is designated for Antarctica, while "AMS" is designated for the Saint Paul and Amsterdam Islands.
Here's a breakdown of the single-letter codes:
- B: Bermuda
- D: Diego Garcia
- E: (no country assigned)
- F: (no country assigned)
- G: (no country assigned)
- I: (no country assigned)
- J: (no country assigned)
- S: (no country assigned)
The ITU also uses codes for other areas, such as territories and islands. For example, the code "ALS" is designated for Alaska, while "GRL" is designated for Greenland.
ITU Letter Codes by Country
The International Telecommunication Union (ITU) uses a system of letter codes to identify its member countries and other areas around the world. These codes are used for various purposes, including radio and television stations, aircraft registration, and more.
The ITU allocates single-letter codes to eight countries, while the rest have three-letter codes. This is in accordance with the ITU's official list.
The ITU prefix is used to identify radio and television stations of all types, and it forms the basis for aircraft registration identifiers. These prefixes are agreed upon internationally.
Here's a list of some countries and their corresponding ITU letter codes:
The ITU also designates codes for other areas around the world that are not member states, such as Switzerland, which has its own data codes.
ITU Letter Code Tables

The ITU letter code tables are a comprehensive list of codes used by the International Telecommunication Union to identify its member countries and other areas around the world. The codes are used for radiocommunication purposes.
Eight countries are assigned single-letter codes (B, D, E, F, G, I, J, S), while the rest have codes three letters in length. This is a significant distinction, as it affects how countries are identified in international communication.
The ITU also designates codes for non-member states, areas, organizations, and special purposes. These codes are listed in a table, which is a valuable resource for anyone working with international communication.
Here are a few examples of codes for non-member states:
These are just a few examples of the many codes listed in the ITU letter code tables. The tables are a valuable resource for anyone working with international communication, and can be used to look up codes for specific countries or areas.
ITU Letter Code Updates
The ITU Letter Code Updates section is a great place to learn about the latest changes to the International Telecommunication Union's (ITU) letter codes.
The ITU updates its list of letter codes regularly, and it's essential to stay informed about these changes, especially if you're involved in international communications.
According to the ITU Operational Bulletin No. 1060, Germany was added to the list with the code DEU ADD, and the contact information for Buchholz Digital GmbH is now included.
The ITU also allocates call sign prefixes for radio and television stations of all types, which are agreed upon internationally and form the basis for aircraft registration identifiers.
Here's a list of some of the ITU prefix examples:
- FLBUDI - Buchholz Digital GmbH Bulk Account Maurerstrasse 10 D-21244 BUCHHOLZ I.D.N.
The ITU's letter codes are used to identify its member countries, and eight countries have single-letter codes, while the rest have codes three letters in length.
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