Yes, please refer to the following article for specific usage results;

s!ed2221e56079ddaf!1114.entry

Supplement: All phone numbers in the United States are ten digits. Seven digits are the basic call number. There are three digits before these seven digits which are the area code. Each "area" has jurisdiction over a wide area, sometimes including an entire state. In some states, there are so many people with telephones in an "area" (usually a metropolitan area) that when you dial the seven-digit phone number, you must also dial the "area code."