Communication

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Columns Introduction of Communication

Area Code.png

Area Code column belongs to Communication category of 18DAO online reference service. It provides cities' telephone calling codes all over the world. You may find more than 200 countries/regions' city area codes here. The column is a good helper for calling anywhere.

International Area Code.png

International Area Code column belongs to Communication category of 18DAO online reference service. Providing international telephone calling codes all over the world. You may find more than 200 countries and areas' area code here. The column is a good helper for dailing international calling.

Morse Code.png

Morse Code column belongs to Communication category of 18DAO online reference service. Providing charactor and morse code alphabets online freely. You may find many more knowledge of morse code here. The column is a good helper for morse code learners and users.

ZIP Code.png

ZIP Code column belongs to Communication category of 18DAO online reference service. It provides cities' postal codes in the United States. You may find all city ZIP codes here. The column is a good helper for search ZIP codes.

Postal Code.png

Postal Code column belongs to Communication category of 18DAO online reference service. It provides postal codes all over the world. You may find more than 50 countries/regions' city area codes here. The column is a good helper for posting anywhere.

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