To call a mobile phone in United States from Norfolk Island use the following dialing code format: 00 + 1 + The Number Click here to search for another mobile country code.
The South Dakota, United States area code chart below gives you the necessary information for calling South Dakota cities. For international dialing instructions to South Dakota, United States, use our drop down boxes at the top of this page or check out our easy-to-use country code search tool.
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