What is syntax/format for US phone number?

What is the syntax/format for a US phone number?

To write a US phone number in international format, follow these steps:

• Begin with the plus symbol (+), indicating you are making an international call.
• Next, add the country code for the United States, which is “1”.
• Then, include the three-digit area code for the specific region of the US.
• Finally, add the seven-digit phone number for the individual or business.

For example, if a contact in the United States has the area code “214” and phone number “XXX-XXXX” you would write it as “+1 214 XXX XXXX” in international format.

What is the country code for the USA +1 or 001?

The country code for the United States is “1.” In international format, it is commonly written as “+1.”