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Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.
The Standard Industrial Classification (SIC) is a system for classifying industries by a four-digit code as a method of standardizing industry classification for statistical purposes across agencies. Established in the United States in 1937, it is used by government agencies to classify industry areas.
ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes. ISO 3166-1 numeric – three-digit country codes which are identical to those developed and maintained by the United Nations Statistics Division, with the advantage of script ...
In Italy, short codes have no fixed length, starting from three digits up to five. All short codes that start with the digit "4", are designated by a local telecommunications law for "network services". Widely known short codes are in the 48xxx range, commercial ringtones and mobile stuff download.
A complete 13-digit code has 5-digit number representing region, sector, city, and zone; 4-digit X between 2000 and 5999; 4-digit Y between 6000 and 9999. [23] Digits of 5-digit code may represent postal region, sector, branch, section, and block respectively.
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.
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Digit Zero: 0017 U+0031 1 49 061 Digit One: 0018 U+0032 2 50 062 Digit Two: 0019 U+0033 3 51 063 Digit Three: 0020 U+0034 4 52 064 Digit Four: 0021 U+0035 5 53 065 Digit Five: 0022 U+0036 6 54 066 Digit Six: 0023 U+0037 7 55 067 Digit Seven: 0024 U+0038 8 56 070 Digit Eight: 0025 U+0039 9 57 071 Digit Nine: 0026 ASCII Punctuation & Symbols: U+ ...