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In the United States, both interexchange carriers (IXCs) such as Sprint, AT&T Inc., and Verizon, and Local Exchange Carriers (LECs) such as Verizon and AT&T offer toll-free services. [2] [3] The way that a toll-free number is handled depends on whether it is a domestic or an interexchange call.
Area code 202 was one of the original North American area codes established in October 1947 by AT&T. After the State of New Jersey with area code 201, the District of Columbia was the second numbering plan area (NPA). Area code 771 was added as a second area code to the numbering plan area in April 2021 to create an all-services overlay complex.
In this case, AT&T Illinois bills the call. 411 NDA: National Directory Assistance. 411 is dialed and the operator is requested to search for a listing in an area code not local to the caller. For example: The caller lives in area code 630 (Oak Brook, Illinois) and requests a listing for a business in area code 213 (Los Angeles, California).
The service will allow any landline or wireless phone user to call 411 and be connected to the wireless listing of a subscriber who has chosen to participate in the service. Carriers who make up the industry LLC creating the service include Alltel (now absorbed by Verizon Wireless), AT&T, T-Mobile, and Sprint Nextel (now absorbed by T-Mobile).
Extended area service (EAS) is a telecommunication service by which telephone calls to certain points beyond the local calling area are not charged or not detail-billed. [1] [2] If the service is subscribed by a customer, other customers have no access to the benefit and are billed standard long-distance charges.
If the call is not local, the call fails unless the dialed number is preceded by digit 1. Thus: 610 xxx xxxx — local calls within the 610 area code and its overlay (484), as well as calls to or from the neighboring 215 area code and its overlay, 267. Area code is required; one of two completion options for mobile phones within the U.S.
Zone Usage Measurement (ZUM) is the method by which phone companies in California distinguished "local" service from "long distance" service within the service area to which local phone companies used to be restricted. Usually the local calling area includes a 13-mile (21 km) radius from the point of origination.
AT&T telephone bills, shortly before the overlay was to go into effect, included the following information for 408 area code customers: Effective April 21, 2012, you should begin the new dialing procedures ([i.e., to use the area code) whenever you place a call from the 408 area code.