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  2. Reverse telephone directory - Wikipedia

    en.wikipedia.org/wiki/Reverse_telephone_directory

    An unpublished number is also excluded from directory assistance services, such as 411. Landline telephone companies often charge a monthly fee for this service. As cellular phones become more popular, there have been plans to release cell phone numbers into public 411 and reverse number directories via a separate Wireless telephone directory ...

  3. Phoneword - Wikipedia

    en.wikipedia.org/wiki/Phoneword

    The main advantages of phonewords over standard phone numbers include increased memorability and increased response rates to advertising. They are easier to remember than numeric phone numbers; thus, when businesses use them as a direct response tool in their advertising (radio, television, print, outdoor, etc.), their memorability tends to have a favorable effect on response rates.

  4. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

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

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

    Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and emails.

  6. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    Number 1 Electronic Switching System (Alcatel-Lucent) US 1FR: Flat rate service: US 2G: second-generation mobile telephone 2.5G: Enhanced 2G mobile telephone 3G: third-generation mobile telephone 4ESS Number 4 Electronic Switching System (Alcatel-Lucent) 4WTS: Four-wire termination set: US 5ESS Number 5 Electronic Switching System (Alcatel ...

  7. List of telephone country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_country...

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as "country dial-in codes", or historically "international subscriber dialing" (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.

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