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  2. Delta Dental - Wikipedia

    en.wikipedia.org/wiki/Delta_Dental

    The Delta Dental Plans Association, also known as simply Delta Dental, is an American network of dental insurance companies composed of 39 independent Delta Dental members operating in all 50 states, the District of Columbia and Puerto Rico.

  3. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    1-NPA-555-01XX is used for fictional telephone numbers; 1-NPA-555-1212 is used for directory assistance; and other 1-NPA-555-XXXX numbers can be used for other 555 services; 556: not in use; available for personal communications services: 557

  4. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    Providers of 800 service were able to add zones to cover the expanded areas able to be offered. However, toll free numbers in the format of 800-NX2-XXXX may have been working for different customers in the US and Canada and not able to be extended beyond that country's border until the corresponding number became spare and assignable.

  5. List of United States insurance companies - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    Between 1870 and 1872, 33 US life insurance companies failed, in part fueled by bad practices and incidents such as the Great Chicago Fire of 1871. 3,800 property-liability and 2,270 life insurance companies were operating in the United States by 1989. [1]

  6. List of mobile network operators of the Americas - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_network...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from major carriers such as AT&T Mobility, T-Mobile US, or Verizon Wireless, as well as regional carrier United States Cellular Corporation for resale.

  7. Directory assistance - Wikipedia

    en.wikipedia.org/wiki/Directory_assistance

    OSIS accepts updates from telecoms providers seven days a week, and supplies that information to the inquiry companies six days a week. [5] As of 2017, there were over 200 providers. [6] 118 118 (The Number) was the second most-expensive number at £11.23 for a 90-second call, but accounted for 40% of DQ calls, [4] mostly due to heavy ...

  8. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  9. Local number portability - Wikipedia

    en.wikipedia.org/wiki/Local_number_portability

    Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange carrier (LEC) to reassign the number to another carrier ("service provider portability"), move it to another location ("geographic portability"), or ...