If you’re a proud holder of a 215 or 267 area code, hold on to your phone number with care. The new 445 area code is being rolled out in March.

And this year, here in the Philadelphia region, there's a whole new meaning behind today's date. 215 Day is Philly's newest homegrown holiday, celebrating our oldest and first area code 2-1-5.

But then the 215 area code was split even more: In 1997, the 267 area code was added as an overlay to 215. Ten-digit dialing was introduced. That was a hassle to learn back in the late 1990s ...

The 215 area code has served the region since 1947. The 215 and 267 area codes currently serve Philly and parts of Berks, Bucks, Lehigh and Montgomery Counties.

The 445 area code will become part of the region served by the 215 and 267 area codes, which includes Philadelphia and sections of Berks, Lehigh, Montgomery and Bucks counties, said Nils Hagen ...