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  2. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Country codes are defined by the International Telecommunication Union (ITU) in ITU-T standards E.123 and E.164. The prefixes enable international direct dialing (IDD). Country codes constitute the international telephone numbering plan. They are used only when dialing a telephone number in a country or world region other than the caller's.

  3. Telephone numbers in Russia - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Russia

    Local phone numbers in Russia may be made up of five (x-xx-xx), six (xx-xx-xx), or seven (xxx-xx-xx) digits. Moscow City has three area codes assigned: 495, 498 and 499: when calling from any zone to 499: 8 499 xxx-xx-xx; when calling from any zone to 498: 8 498 xxx-xx-xx; when calling from any zone to 495: 8 495 xxx-xx-xx

  4. List of international call prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_international_call...

    This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, the symbol + before the country code may be used irrespective of where the telephone is used at that moment; the network operator ...

  5. Lists of country codes - Wikipedia

    en.wikipedia.org/wiki/Lists_of_country_codes

    This is a listing of lists of country codes: List of ISO country codes (ISO 3166) ITU country code (International Telecommunication Union) List of country calling codes E.164; Mobile country code E.212; Maritime identification digits; List of ITU letter codes (radiocommunication division) UIC country code (International Union of Railways)

  6. +7 - Wikipedia

    en.wikipedia.org/wiki/+7

    +7 is an ITU country code for telephone numbering. It was originally assigned to the Soviet Union.After the 1991 dissolution of the Soviet Union, the code continued to be used by the fifteen successor states, the majority of whom switched to own country codes from the +3xx and +9xx ranges between 1993 and 1998.

  7. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    An additional digit has been added to the code of every carrier. Making a single code per carrier, after each carrier had to have multiple codes. And making the NSN 10 digits after it was 9. Dialing format inside Egypt is 01X XXXX XXXX, International format is 20 1X XXXX XXXX; 11: Etisalat: 12: Orange Egypt: 15: WE Egypt El Salvador +503: 6: 8

  8. E.164 - Wikipedia

    en.wikipedia.org/wiki/E.164

    The number is presented starting the country calling code. This is called the globalized format of an E.164 number, and is defined in the Internet Engineering Task Force RFC 2806. [6] The international calling prefix is a trunk code to reach an international circuit in the country of call origination. [7]

  9. Call signs in Russia - Wikipedia

    en.wikipedia.org/wiki/Call_signs_in_Russia

    R3ARC – H.Q. Rescue service of Russian Red Cross. Moscow. R3RRC – "Russian Robinson Club" H.Q. Lipetsk city (R3G area). R3SRR – Russian Amateur Radio Union H.Q. Moscow. R3VHF – VHF Committee of Russian Amateur Radio Union. RS0ISS – Cosmonauts on the International Space Station.