A phone number consists of the country calling code, area code, and a few more numbers which helps
provide an exact address for connecting the phone call with a specific phone line.
The country code is the first number you dial to reach anyone from another country, and it is not
necessary to dial the country code if the person you are trying to reach is in the same country. The
area code is the next group of numbers to dial, and it is for a more specific but large geographical
region. Large cities usually have multiple area codes.