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

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

    Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888.Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future.

  3. Protean eGov Technologies - Wikipedia

    en.wikipedia.org/wiki/Protean_eGov_Technologies

    Protean eGov Technologies Limited (previously NSDL e-Governance Infrastructure Limited) is an Indian technology company headquartered in Mumbai. [1] The company focuses on developing digital public infrastructure (DPI) and e-governance initiatives for various governmental bodies in India. [ 2 ]

  4. Toll-free number portability - Wikipedia

    en.wikipedia.org/wiki/Toll-free_number_portability

    The system was redesigned in 1981 to use a database, the SMS/800 service management system, which could direct any toll-free number to any destination based on various conditions; number prefixes remained tied to specific carriers until a RespOrg (responsible organization) structure was introduced in 1993 (US) and 1994 (Canada) to allow ...

  5. 555 (telephone number) - Wikipedia

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

    The 555 exchange is not reserved in area codes used for toll-free phone numbers. This led to the video game The Last of Us accidentally including the number to a phone-sex operator. [9] The number "555-2368" (or 311-555-2368) is a carryover from the "EXchange 2368" ("Exchange CENTral") number common in telephone advertisements as early as the ...

  6. Toll-free telephone number - Wikipedia

    en.wikipedia.org/wiki/Toll-free_telephone_number

    800-toll-free numbers in China are ten-digit numbers beginning with "800". There is no prefix before "800". 800-toll-free numbers are not accessible to mobile network subscribers and some land-line subscribers. For instance China Tietong Telecom land-line users cannot access 800 numbers.

  7. National Securities Depository Limited - Wikipedia

    en.wikipedia.org/wiki/National_Securities...

    National Securities Depository Limited (NSDL) is an Indian central securities depository under the jurisdiction of Ministry of Finance, Government of India based in Mumbai. The enactment of Depositories Act, December 1995 paved the way for establishment of NSDL. It was established in 1995 as the first electronic securities depository in India ...

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

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

    Codes 880 through 882 were used (until 1 April 2004) to allow international customers to access toll-free numbers they otherwise could not by paying the international portion of the toll. 880 was paired with 800, 881 with 888, and 882 with 877. [21] 888: toll-free telephone service: March 1, 1996: created; 889: not in use; available for toll ...

  9. Telephone numbers in Canada - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Canada

    Non-geographic toll-free telephone numbers (800, 833, [3] 844, 855, 866, 877, 888) and premium-rate telephone numbers (900) are allocated centrally by the NANP Administrator. Calls to telephone numbers with the central office code 976 are billed as expensive premium calls.