This is also essential for ship-owner to ask with the person who is registering his vessel, the list of Approved/Recognized Radio Accounting Entities, same as classification, you have to chose the best Services Provider who possess the Good experience on his field. You can see its importance that your Radio equipment will not work until you have correct frequencies which will set to Call Sign and MMSI and other allocations. So being a consultancy firm of merchant marine, we recommend you to take care about this step also for safe sailing in Green and Clean Ocean. 

We hereby appending the list of Radio Accounting Entities which is approved by ITU, Different Flag Administration and Classification Societies., But final list will be provided by your Flag or Class that they approved which ones. Another most common term is defined here that is called AAIC (Accounting Authority Identification Number) The First two Letter will indicate the country code of that company and the last two code will indicate as its allocation. They are approximate 700 private organizations, we will mention here the most popular AAIC which normally recommend all flags and classes.

Recognized List of Accounting Authority Identification Code-AAIC

and Radio Accounting Authorities (RAA)