N/format/i18n Module
format.PhoneNumberFormatter
Object Description: The object that formats the phone number to string.
Supported Script Types: Client and server-side scripts For more information, see SuiteScript 2.0 Script Types.
Module: N/format/i18n Module
Methods and Properties: Phone Number Formatter Object Members
Since: 2020.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=format.PhoneNumberFormatter

// Code Example 1

// Add additional code

//...

require(['N/format/i18n'],

    function(format) {

        log.debug("test parsing from string:");

        var origNumberStr = "602547854ext.154";

        log.debug("Original number is " + origNumberStr);

        var pnParser = format.getPhoneNumberParser({

            defaultCountry: format.Country.CZECH_REPUBLIC

        });

        var phoneNumber = pnParser.parse({

            number: origNumberStr

        });

        log.debug("Country code: " + phoneNumber.countryCode);

        log.debug("Extension: " + phoneNumber.extension);

        log.debug("National number: " + phoneNumber.nationalNumber);

        log.debug("Number of leading zeros: " + phoneNumber.numberOfLeadingZeros);

        log.debug("Carrier code: " + phoneNumber.carrierCode);

        log.debug("Raw input: " + phoneNumber.rawInput);



        log.debug("\n---------------\nFormatting back:");

        var pnFormatter = format.getPhoneNumberFormatter({});

        var strNumber = pnFormatter.format({

            number: phoneNumber

        });

        log.debug(strNumber);

    });

//...

// Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_158626649783.html