Unlisted Phone Numbers are unlisted for a reason
What on earth are unlisted phone numbers and why can't you do a simple reverse cell phone lookup using the white pages? Unlisted or unpublished numbers are simply telephone numbers that are not listed on phone books. These unlisted numbers are usually cell phone numbers while they can rarely be land line numbers as well. When it comes to cellular phones, a lot of people don't want their number listed on a phone book/telephone directory. The reason? Well for one, they want to keep the telemarketers away. And second, who doesn't want some privacy eh?
Check out this article on eHow to learn more about why cell phone numbers are unlisted if you don't believe us!
You can't find a person's details with a simple reverse phone book lookup
What this means is that cellular phone numbers will not be listed on phone books and therefore you can't find a person's mobile phone contact details from a phone directory. If you could, your mobile phone would be getting tons of calls from telemarketers because they would be the first ones to dig your cell number from these directories.
In addition to cell phone numbers, there may be certain land line numbers also that are "unlisted". In case of mobile phones, no public phone books exist. However, in the case of land lines, as you know, there are phone books that can be accessed by the public (example: AT&T phonebook). So if somebody wants their number unlisted or unpublished, they have to make a special request upon which their land phone number will not be listed on telephone directories. Pretty simple ha?
The only problem with these 3rd party companies (or services) that let you do a reverse phone lookup is that they charge you $$ for their services! If it wasn't for the money, it would have been wonderful wouldn't it?