A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering//☎️8167845548\\18008899999//8167-845548.. Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme.A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering//☎️8167845548\\18008899999//8167-845548.. Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme.A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering//☎️8167845548\\18008899999//8167-845548.. Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme.A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering//☎️8167845548\\18008899999//8167-845548.. Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme.
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