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By 1971 the North American network had been prepared for operation with central office codes that permitted the digits 0 and 1 as the middle digit, i.e. with the number format NXX (less N11), where N=2–9, and X=0–9. [4]
Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...
A 9 would be inserted as the new second digit of all area codes (e.g. 212 would become 2912, 916 would become 9916). Permissive dialing would be allowed because exchange equipment, on detecting a 9 as the second digit of the area code, would respond appropriately to expect 11 digits, or 10 in the absence of a 9 in that position.
An individual’s PIN is the four-digit code they set after opening a debit account with their bank of choice. It is used as a layer of authentication when they perform an electronic transaction ...
see #4-digit publisher codes: 71400~71699: see #3-digit publisher codes: 71700~73199: see #4-digit publisher codes: 73200~73999: see #7-digit publisher codes: 74000~74109? 74110 New Holland Publishers: London, UK 74175 Allen & Unwin: Crows Nest, NSW, Australia 74179 Lonely Planet Publications pty Melbourne, Vic, Australia 74220 Lonely Planet ...
A credit card security code is a three- or four-digit code that’s unique to your card. In case a merchant asks, the security code goes by a few different names, mainly the:
Only a subset of possible combinations are possible, with the complete 0 to 7 for the first digit but only 0 to 3 for the second, allowing 32 codes between 00 and 73. This is sometimes known as the "mission signal" and set by the air controllers prior to flight. In Mode 2 and 3, all 4096 possible 4-digit codes from 0000 to 7777 are allowed. [21]
Unambiguous item identification in accordance with the STANAG 3151 standard. This identification takes place utilizing a NATO Stock Number (NSN), which is composed of a 4-digit NATO Supply Classification Code, a 2-digit code for the National Codification Bureau (NCB) representing the country that codifies the item, and a 7-digit non-significant number that is assigned by this NCB.