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Some geographic area codes are similar to the toll-free codes, e.g., 801, 818, 860. Toll-free numbers are also sometimes confused with 900-numbers, for which the telephone company bills the callers at rates far in excess of long-distance service rates for services such as recorded information or live chat.
411 LDA: Local Directory Assistance. 411 is dialed, and the operator is requested to search for a listing in a group of area codes local to the caller . Example: the caller lives in area code 630 (Oak Brook, Illinois) and requests a listing for a business in area code 312 (Chicago, Illinois). In this case, AT&T Illinois bills the call.
On May 1, 1993, the management and assignment of toll-free numbers transitioned from the interim 800 NXX Plan to a 10 digit management plan in the national 800 Service Management System (SMS/800). On January 25, 1995, INC designated the 888 Numbering Plan Area (NPA) code as the next area code for use in providing toll-free service.
Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...
After competitive carriers were allowed to compete with AT&T in establishing toll-free service, the three digit exchange following the 800 prefix was linked to a specific destination carrier and area code; the number itself corresponded to specific telephone switching offices and trunk groups.
When dialing a telephone number, the area code may have to be preceded by a trunk prefix or national access code for domestic calls, and for international calls by the international access code and country code. Area codes are often quoted by including the national access code. For example, a number in London may be listed as 020 7946 0321.
Direct-distance dialing (DDD) was first introduced in areas with common-control switching (panel and crossbar) in the 1950s.These areas had used 411 for directory assistance, and because of the ability of common-control switching to analyze the initial digits of a number in a "sender" before routing the call, these areas did not require the dialing of an initial 1 to initiate a long-distance call.
To find the poorest area codes, the bottom-three lowest mean incomes per area code were averaged to come up with mean income for the entire area code. Only area codes with at least three high ...