Quote Originally Posted by TimW View Post
The official format for US phone numbers is (nnn) 555-1212
I actually couldn't find any documentation that says the "(NPA)NXX-NUMB" is the official US formatting (with regards to delimiters). NANPA documents, etc.. does anyone know? I thought it's just one of the acceptable formats, but the official North American numbering is just NPA-NXX-1234 without specifying the 'official' way to format it. I might be mistaken.

Quote Originally Posted by abward
I use periods, like most of the rest of world.
Hmmm.. says who? I know many countries who don't use periods. The international number format is "+(country code) (number)"

With that, I vote for hypens/dashes NPA-NXX-1234. It's more space efficient than (NPA)NXX-1234