Your card number is carefully structured. The very first digit is what’s known as the major industry identifier. A 4 means ...

In many parts of the US, it has long been possible to make local calls with just the seven-digit phone number; the three-digit area code was implicit for calls between numbers using the same area code ...

10-digit dialing requires callers to enter the area code for the phone number they’re dialing. skynesher Getty Images People making local calls to Lexington phone numbers will now have to dial the 859 ...