Search results
Results From The WOW.Com Content Network
On November 21, 2014, numbers were expanded from 8 to 9 digits, by prefixing with 2 or 6. [1]1 June 2007 - national renumbering to 8 digits, when 7-digit numbers were expanded to eight digits.
The final character of a ten-digit International Standard Book Number is a check digit computed so that multiplying each digit by its position in the number (counting from the right) and taking the sum of these products modulo 11 is 0. The digit the farthest to the right (which is multiplied by 1) is the check digit, chosen to make the sum correct.
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]
For example, a telephone number in North America consists of a three-digit area code, a three-digit central office code, and four digits for the line number. If the numbering plan area does not use an overlay plan with multiple area codes, or if the provider allows it for other technical reasons, seven-digit dialing may be permissible for calls ...
In 2012 and 2013, land lines were renumbered, with an additional digit 2 prepended. [1] The change was rolled out gradually by area code; first in Santiago (Region Metropolitana) and Arica in late 2012, then throughout all remaining regions between March and July 2013.
Ten-digit dialing is a telephone dialing procedure in the countries and territories that are members of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when dialing to initiate a telephone call.
Mobile phone numbers are not uniquely different from land-line numbers, and thus follow the same rules for format and area code. Numbers may be ported between landline and mobile . The rarely used non-geographic area code 600 is an exception to this pattern (non-portable, and allows caller-pays-airtime satellite telephony ); some independent ...
Typical format for a mobile phone number when dialed inside county is 01XNN-NNNNNN and when dialed outside county +880 1XNN-NNNNNN is used (where X is operator code and N is subscriber number). 013 and 017 - Grameenphone 014 and 019 - Banglalink 015 - Teletalk 016 and 018 - Robi (016 is mainly used for Airtel ) 011 - Citycell (currently closed)