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On 30 December 1989, area codes were abolished. [4] Six-digit numbers in the New Territories were changed to replace the initial 8 with 46, followed by five digits; area codes for six-digit numbers in the other areas became part of subscriber's numbers. Area codes for seven-digit numbers were simply removed.
Landline calls within the same area do not require the area code. Calls to other areas require dialing the trunk prefix 0 and the area code. The special administrative regions of Hong Kong and Macau are not part of this numbering plan, and use the calling codes 852 and 853 respectively.
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.
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.
No area codes: Telephone numbers in Brunei ... +852: 001: No area codes: Telephone numbers in Hong Kong
Area code 541 was created in an area code split from ... Central office prefixes in area code 541 [5] Prefix Location County Introduced ... 852 Eugene: Lane:
Area code 603 in a 1956 map, covering the whole state. Area code 603 is the sole area code for the U.S. state of New Hampshire in the ... 852 Keene: Cheshire: March 3 ...
NPA Year Current region 212: 1947 New York City: Manhattan only; overlays with 332, 646, and 917 : 315: 1947 Syracuse, Utica, Watertown, and north central New York; overlaid by 680.