Ad
related to: three digit number for at&t- Check Availability
Get Fiber-Fast AT&T® Internet
Order Online Or Call 24/7
- AT&T Fiber Internet
Plans Starting At $55/Mo
High-Speed Internet At Home
- Internet Special Promos
Call Or Order Online 24/7
Browse Our Best Deals
- Contact Us
Call Now Or Order Online
Live Agents Available 24/7
- Check Availability
Search results
Results From The WOW.Com Content Network
N11 code. This U.S. road sign alerts highway users to the availability of 9-1-1 service. 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 ...
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
This rounded the total number of digits in a subscriber telephone number to ten: a three-digit area code, three-digit central office code, and four digits for each line. This fixed format defined the North American Numbering Plan as a closed numbering plan , [25] as opposed to developments in other countries where the number of digits was not ...
AT&T divided the United States and Canada into numbering plan areas (NPAs), and assigned to each NPA a unique three-digit prefix, the numbering plan area code, which became known in short-form as NPA code or simply area code. The area code is prefixed to each telephone number issued in its service area.
Abbreviated dialing. Abbreviated dialing is the use of a very short digit sequence to reach specific telephone numbers, such as those of public services. The purpose of such numbers is to be universal, short, and easy to remember. Typically they are two or three digits. Carriers refer to the shortened number sequences as abbreviated dialing ...
Telephone prefix. A telephone prefix is the first set of digits after the country, and area codes of a telephone number. 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 ...
The number is composed of the three-digit numbering plan area code, a three-digit central office code, and a four-digit station or line number. Certain rules govern the numerical format of each part. These rules have evolved from historical convention, technical aspects of the switching equipment, and administrative decisions by the network ...
Created conflicts in area code regions that allowed seven-digit dialling and had been using numbers beginning in 988; a total of 82 area codes switched to ten-digit dialling as a result. 989: Michigan (Alpena, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso, and a part of central Michigan) April 7, 2001: split of 517; 990–999
Ad
related to: three digit number for at&t