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An area code of three digits dialed after the country code determines the area served in the United States and its territories, Canada, and much of the Caribbean. Zone 2 uses two 2-digit codes (20, 27) and eight sets of 3-digit codes (21x–26x, 28x, 29x), mostly to serve Africa , but also Aruba , Faroe Islands , Greenland and British Indian ...
Georgia, alongside the standard prefix 00 for the default carrier; 8~xx, where xx is a two-digit carrier selection code: Russia, alongside the standard prefix 8~10 for the default carrier 8~26 – Arctel; 8~27 – Synterra; 8~28 – Comstar; 8~56 – GoldenTelecom; 8~57 – Transtelecom; 8~58 – MTT; 8~59 – Orange Business Services
Russia has an open numbering plan with 10-digit phone numbers. Trunk prefix is 8 (or 8~CC when using alternative operators, where CC is 21–23, 52–55). International call prefix is 8~10 (or 8~CC when using alternative operators, where CC is 26–29, 56–59). The country code is 7.
8-10: Vodafone: 6 to 8 digits 22: 9: 2degrees: 7 digits 24? Unused: Protected by Management Committee on 30 January 2009 to preserve the potential code expansion option. 25: 8-9: Unused: 6-7 digits - Was used by Telecom New Zealand (now called Spark) until it was shut down on 31 March 2007. All numbers have now migrated to 027 (7-digit) and ...
Download QR code; Print/export ... hexadecimal (numbers expressed in base 2, base 3, base 8, base 10, base 16 ... Some of the SI prefixes denote negative powers of 10 ...
In 1954, APCO published an article describing a proposed simplification of the code, based on an analysis conducted by the San Diego Police Department. [8] In the September 1955 issue of the APCO Bulletin, a revision of the Ten-Signals was proposed, [ 9 ] and it was later adopted.
As with a prefix code, the representation of a string as a concatenation of such words is unique. A bifix code is a set of words which is both a prefix and a suffix code. [8] An optimal prefix code is a prefix code with minimal average length. That is, assume an alphabet of n symbols with probabilities () for a prefix code C.
Now it is required to dial 80~AARRnn-nnn where AA is the area code, RR is the region code and nn-nnn is the local number. International calling remains unchanged: 8~10-xxx...xxxx where 8 is a trunk prefix, 10 is the international access code, xxx...xxxx are the digits of the destination country, areas and local number.