International telephone number cantry Cod

An international telephone number country code is a numeric prefix that enables the dialing of phone numbers across different countries. Each country has its own unique code, typically consisting of one to three digits, which must be dialed before the local phone number when making an international call. For example, the country code for the United States is +1, while the code for the United Kingdom is +44. These codes are part of the international telephone numbering plan established by the ITU (International Telecommunication Union).