As if letters being present in phone numbers isn't strange enough ... along with a three-digit area code. However, they were drastically shorter in the late 19th century, when telephone ...

A unique detail among early U.S. telephone numbers is that it contained letters. This was because the phone company then assigned five-digit numbers to its subscribers, which was preceded by two ...

They actually had two or three letters at the beginning ... Nowadays, phone numbers are typically seven digits long, along with a three-digit area code. However, they were drastically shorter ...