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Until August 3, 2019, telephone numbers in Mexico consisted of ten digits with either two-digit area codes (for Mexico City, Monterrey, and Guadalajara and their respective metropolitan areas) or three-digit area codes for the rest of the country.
An N11 code (pronounced Enn-one-one) is a three-digit dialing code used in abbreviated dialing in the North American Numbering Plan (NANP). The mnemonic N stands for the digits 2 through 9 and thus the syntax stands for the codes 211 , 311 , 411 , 511 , 611 , 711 , 811 , and 911 .
However, on 17 December 1994, Andorra adopted its own country code +376, with '8' being added to the subscriber's five-digit number, meaning that international dialling was required from Spain, e.g.: [6] 9738 xx xxx (before 17 December 1994) 07376 8xx xxx (after 17 December 1994) Mobile phone numbers began with the prefix '90x' or '9x9', e.g.: [7]
Telephone numbers in Russia are administered by Roskomnadzor, and the Ministry of Digital Development, Communications and Mass Media of the Russian Federation. [2] Russia's national telephone numbering plan comprises four levels of destination routing codes with local, zone, country, and international scopes, implementing a closed numbering plan, in which the number of digits of all national ...
Telephone numbers in Canada follow the fixed-length format of the North American Numbering Plan (NANP) of a three-digit area code, a three-digit central office code (or exchange code), and a four-digit station or line code. This is represented as NPA NXX XXXX. [1]
Until 1985, subscribers' telephone numbers in Singapore were five and six digits. Five digits were introduced in 1960s, whereas 5-digit and 6-digit phone numbers were introduced in 1960s as fixed lines grew, but in that year, these changed to seven digits as the introduction of new towns arose (Tampines, Jurong East, Bukit Batok, Yishun and Hougang) and a large number of new numbers were required.
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]
After 0, there is usually a 2-digit prefix, followed by a 7-digit subscriber number. The capital, Bratislava, has one-digit prefix and an 8-digit subscriber number. Following the break-up of Czechoslovakia in 1993, the successor states, the Czech Republic and Slovakia , continued to share the 42 country code, until 28 February 1997, when the ...