Understanding Credit Card Validation Codes: Security and Examples

Discover how credit card validation codes work and protect against fraud. Learn about their placement, security role, and examples to secure online transactions.
The Providence Journal

When did RI get its 401 area code ... and how long will it last? Crunching the numbers

Rhode Island received the 401 area code in January 1947, one of the original area codes assigned by AT&T. Originally, operators connected calls, but area codes were developed to speed up the process ...
WLKY

Get the Facts: Kentucky's '502' area code running out of phone numbers, new 3 digits possible

COMBINED SALES OF FRUITS AND VEGETABLES. CENTRAL KENTUCKY IS KNOWN FOR ITS 502 AREA CODE, BUT IT’S EXPECTED TO RUN OUT OF AVAILABLE PHONE NUMBERS. WLKY MADELEINE CARTER IS LIVE IN THE HIGHLANDS, ...
KJZZ

There are nearly 8 million possible numbers in an area code. How is Arizona’s 520 running out?

Sometime in the next five years or so, some southern Arizona residents are going to find out that their new neighbors have a different area code.