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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.
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 ...
Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
Country name Country Code International Call Prefix Main article Abkhazia +995 44, +7 840, +7 940 — Telephone numbers in Abkhazia Christmas Island +61 8 9164 — Telephone numbers in Christmas Island
Mobile numbers which are not local need to be prefixed by a 0 while dialing, or by +91 (91 is the country code for India). A mobile number written as +91-AAAAA BBBBB is valid throughout India, and in other countries where the + is recognized as a prefix to the country code. Since 2015, calls from mobile phones to any other mobiles do not need ...
Thus, a full national number is 10 digits in area code 3 and 9 digits elsewhere, including the STD prefix 0. When writing a telephone number with the area code, the area code and subscriber number is separated with a hyphen. Examples: A number 2xxx xxxx in Kuala Lumpur: 03-2xxx xxxx; A number 2xx xxxx in George Town, Penang: 04-2xx xxxx
The first customer-dialed direct call using an area code was made on November 10, 1951, from Englewood, New Jersey, to Alameda, California. [6] Direct distance dialing (DDD) was introduced subsequently across the country. By the early 1960s, DDD had become commonplace in cities and most towns in the United States and Canada.
Numbering plan areas and area codes of New Jersey. The area codes in the U.S. State of New Jersey are a component of the North American Numbering Plan. 201: Northeastern New Jersey, primarily Bergen County and Hudson County. 551: Overlays area code 201.