Call or text all your customers, employees and members real fast
Call or text all your customers, employees and members real fast
Convert a list of 10 digit phone numbers to any popular format you like for free.
Sigma Voice is a service provider of automated calling and mass texting.
Copy and paste your phone numbers then click submit to convert to (XXX) XXX-XXXX format.
Process up to 100 phone numbers at a time.
The acceptable format of phone numbers for the US, Canada and other NANP (North American Numbering Plan) countries is to enclose the area code in parentheses followed by a nonbreaking space, and then hyphenate the three-digit exchange code with the four-digit number.
Recommended: (415) 555-0132
Some frequently asked questions.
Local
456-7890
Domestic
212-456-7890
International
+1-212-456-7890
Both the U.S. and Canada use NANP (North American Numbering Plan) which is the commonly accepted formatting of phone numbers.
'NPA' is the area code. 'NXX' is the central office code and 'XXXX' is the remaining subscriber number personal to each phone number.
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