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PhONEday had cleared area codes from 02 to 09 of all geographic allocations by converting 9-digit numbers to 10-digit 01 numbers (and, in parts of at least 47 area codes, 8-digit numbers to 9-digit 01 numbers). After PhONEday, all pre-existing 9-digit mobile, non-geographic, premium rate, personal and pager numbers from 02 to 09 remained in place.
STD codes are two, three, four or, exceptionally, five digits long (after the initial zero). Regions with shorter area codes, typically large cities, permit the allocation of more telephone numbers as the local number part has more digits. Local customer numbers are four to eight digits long. The total number of digits is ten or, very rarely, nine.
The remainder of the "mixed" area code allocations and their history are detailed in the table below. Of the 11 area codes freed up for alternative use in the 1980s, only 5 were actually re-used for other services. For example, the 0541 area code was re-allocated to C&WC Area Call services. Six of the area codes remained unused.
Code squawked when entering a secondary surveillance radar (SSR) area from a non-SSR area used as uncontrolled IFR flight squawk code. [1] EASA countries: Code that pilot shall set in the absence of ATS instructions related to code setting, unless when not receiving air traffic services. [12] US
Geographic numbers in the New States were assigned area codes starting with 3, in some cases followed by the former East German area code (without the initial 0) or a code similar to it. Thus, Leipzig , for example, which had used East German domestic area code 41, was assigned the new area code 341 in the unified telephone system.
This list is based on the official standard, but includes defunct codes and historical changes, including the derivation of the two letter identities, in cases where known. [ 1 ] [ 2 ] [ 3 ] Dialling codes do not correspond to specific political boundaries: for example, the Coventry dialling code covers a large area of Warwickshire and the ...
The star codes (*) are for use on Touch-Tone telephones, whereas the four-digit numbers prefixed 11xx are used on rotary dial telephones which cannot dial the * symbol. Not all NANP countries use the same codes. For example, the emergency telephone number is not always 911: Trinidad and Tobago and Dominica use 999, as in the United Kingdom.