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2. Fictitious telephone number - Wikipedia

   en.wikipedia.org/wiki/Fictitious_telephone_number

   Ranges for fictitious telephone numbers are common in most telephone numbering plans. One of the main reasons these ranges exist is to avoid accidentally using real phone numbers in movies and television programs because of viewers frequently calling the numbers used. In North America, the area served by the North American Numbering Plan (NANP) system of area codes, fictitious telephone ...

3. Reverse telephone directory - Wikipedia

   en.wikipedia.org/wiki/Reverse_telephone_directory

   A reverse telephone directory (also known as a gray pages directory, criss-cross directory or reverse phone lookup) is a collection of telephone numbers and associated customer details. However, unlike a standard telephone directory, where the user uses customer's details (such as name and address) in order to retrieve the telephone number of ...

4. Whitepages (company) - Wikipedia

   en.wikipedia.org/wiki/Whitepages_(company)

   Whitepages is a provider of online directory services, fraud screening, background checks and identity verification for consumers and businesses. It has the largest database available of contact information on residents of the United States.

5. 555 (telephone number) - Wikipedia

   en.wikipedia.org/wiki/555_(telephone_number)

   555 (telephone number) The telephone number prefix 555 is a central office code in the North American Numbering Plan, used as the leading part of a group of 10,000 telephone numbers, 555-...., in each numbering plan area (NPA) (area code). It has traditionally been used only for the provision of directory assistance, when dialing NPA-555-1212.

6. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

   www.aol.com/finance/free-reverse-phone-lookup-8...

   Have you ever wondered who owns that phone number? You know, the one that keeps calling you and won't leave you alone? Try a free reverse phone lookup site to find out who's calling.

7. Caller ID spoofing - Wikipedia

   en.wikipedia.org/wiki/Caller_ID_spoofing

   Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.