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In Hungary, telephone numbers are in the format 06 + area code + subscriber number, where the area code is a single digit 1 for Budapest, the capital, followed by a seven digit subscriber number, and two digits followed by either seven (for cell phone numbers) or six digits (others). for other areas, cell phone numbers or non-geographic numbers ...
The use of numbers starting in 555-(KLondike-5) to represent fictional numbers in U.S. movies, television, and literature originated in this period. The "555" prefix was reserved for telephone company use and was only consistently used for directory assistance (information), being "555–1212" for the local area.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
But with 10-digit phone numbers, multiple area code overlays, and phones serving individuals, not families, it’s not feasible for most of us to commit a lot of numbers to memory. jared-m ...
In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the number may have different lengths. It shows which exchange the remaining numbers refer to. A full telephone number is usually ...
Two-digit numbers were sufficient on small exchanges with fewer than 100 subscribers, while exchanges with a few hundred lines used three-digit subscriber numbers, e.g. 200–499. Larger exchanges which covered thousands of lines used four-digit subscriber numbers, e.g. 2000–5999, or five-digit subscriber numbers, e.g. 20000–49999.
As with the landline home numbers, the mobile numbers' middle three-digit part is extended to four digits (e.g., 016490641) due to the increased number of mobile phone users. Business numbers If a number starts with 070, the number does not belong to any particular area, and is a number given by an Internet telephone service.
The first automated dial exchanges in the Bell System were deployed in 1919. [5] When seven-digit telephone numbers were first assigned in New York in 1920, [6] the three-letter four-number (3L-4N) system had represented the number in the format PENnsylvania 5000. Similar systems were used in Boston, Chicago, and Philadelphia.