Losing track of your own phone number is disconcerting. It’s also something that happens frequently enough. Human memory is imperfect anyway. Making it an issue for just about everybody at some point.

How many people and companies have your phone number if you had to guess? Maybe a hundred? Think again. Want to be shocked? Your cellphone and landline number (if you still have one) are probably ...

Whether you want to port your existing phone number to a new provider or contact customer service, you'll want to find your AT&T account number fast. Your account number is a unique identifier that ...