Q1 What are the names and telephone numbers of the top 3 US companies
/ US organizations that "own" the largest databases of "nonpublished"
US wireline telephone numbers (i.e. a home or business telephone
number that cannot be found via dialing 411, searching a local
phonebook, using Google Phonebook)?

Q2 How do these companies obtain these nonpublished telephone numbers?

Q3 Why would a large company have need for a person's nonpublished telephone number?

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Clarification of Question by teledeal-ga on 01 Feb 2004 12:44 PST

Please don't provide me the names of the big RBOCs / ILECs / Etc.:
SBC, BellSouth, Verizon, Quest, CenturyTel, Sprint, etc. These firms
are regulated telephone companies and cannot legally provide
nonpublished / unlisted telephone numbers ... because it is classified
as CPNI (Customer Proprietary Network Information).

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Clarification of Question by teledeal-ga on 02 Feb 2004 20:04 PST

There are more than 160 million published wireline tel #s in the US
and about 60 million nonpublished ones. HOW DO THEY GET ~60 MILLION
NONPUBLISHED NUMBERS IN A DATABASE AND TIE THEM TO A NAME / ADDRESS?