What is area code 412?

Area code 412 is a telephone area code in the North American Numbering Plan (NANP) that covers Pittsburgh, Pennsylvania, and its surrounding regions.

When was area code 412 implemented?

Area code 412 was implemented in 1947.

Which cities are covered by area code 412?

Area code 412 covers cities such as Pittsburgh, Bethel Park, McKeesport, Mount Lebanon, Monroeville, Penn Hills, Plum, Upper Saint Clair, and West Mifflin.

What counties does area code 412 serve?

Area code 412 serves parts of Allegheny, Washington, and Westmoreland counties.

What type of area code is 412?

Area code 412 is an overlay type area code.

Which major carriers provide services in area code 412?

The major carriers providing services in area code 412 include Verizon, AT&T, T-Mobile, and Comcast.

What services are offered in area code 412?

Services offered in area code 412 include landline, wireless, and VoIP.

Is ten-digit dialing required in area code 412?

Yes, ten-digit dialing has been mandatory in area code 412 since 2001.

What is the significance of the year 1998 for area code 412?

In 1998, area code 724 was split from 412 to address the growing demand for new numbers.

What was introduced in 2001 related to area code 412?

In 2001, area code 878 was introduced as an overlay to both 412 and 724.

What is the North American Numbering Plan (NANP)?

The North American Numbering Plan (NANP) is a telephone numbering plan that encompasses 25 regions in twenty countries, primarily in North America.

Why was area code 878 introduced?

Area code 878 was introduced to ensure continued availability of phone numbers in the region covered by area codes 412 and 724.

How does area code 412 impact businesses in Pittsburgh?

Area code 412 provides essential telecommunications services that support business operations in Pittsburgh and its surrounding areas.

What historical significance does area code 412 have?

Area code 412 is one of the original North American area codes established in 1947, highlighting its long-standing role in regional telecommunications.

How has area code 412 evolved over time?

Area code 412 has evolved through splits and overlays, such as the introduction of area codes 724 and 878, to accommodate increasing demand for phone numbers.

What is an area code overlay?

An area code overlay is a telecommunications technique where a new area code is added to the same geographic region as an existing area code, allowing for more phone numbers.

What is the geographic coordinate of Pittsburgh in area code 412?

The geographic coordinate of Pittsburgh in area code 412 is [40.44062, -79.99589].

What is the role of the Pennsylvania Public Utility Commission (PUC) in area code 412?

The Pennsylvania Public Utility Commission (PUC) ensures compliance with NANPA guidelines and regulates telecommunications services in area code 412.

Where can I find more information about area codes and number management?

For more information on area codes and number management, you can visit the North American Numbering Plan Administration website at https://www.nationalnanpa.com/.

Area Code 412: Comprehensive Guide to Pittsburgh's Phone Network

Introduction

Where is Area Code 412 located? Area code 412 is a prominent area code in the North American Numbering Plan (NANP), covering Pittsburgh, Pennsylvania, and its surrounding regions. Known for its historical significance and the bustling city it serves, this area code is vital for residents and businesses alike.

Key Details and Technical Specifications

NPA Code: 412
Type: Overlay
Implementation Date: 1947
State: Pennsylvania

Geographic Coverage

Area code 412 covers a wide geographic area, including the city of Pittsburgh and parts of Allegheny, Washington, and Westmoreland counties. This ensures comprehensive coverage for a significant portion of southwestern Pennsylvania.

Major Cities Served

Pittsburgh: Coordinates [40.44062, -79.99589]
Bethel Park: Coordinates [40.32757, -80.0395]
McKeesport: Coordinates [40.34785, -79.86422]
Mount Lebanon: Coordinates [40.35535, -80.0495]
Monroeville: Coordinates [40.42118, -79.7881]
Penn Hills: Coordinates [40.50118, -79.83922]
Plum: Coordinates [40.50035, -79.74949]
Upper Saint Clair: Coordinates [40.3359, -80.08339]
West Mifflin: Coordinates [40.3634, -79.86644]

Network Infrastructure and Carriers

Area code 412 is supported by a robust telecommunications infrastructure, providing a range of services to meet the needs of its users.

Major Carriers

Verizon
AT&T
T-Mobile
Comcast

Services Offered

Landline
Wireless
VoIP

Regulatory Framework

The Pennsylvania Public Utility Commission (PUC) regulates area code 412, ensuring compliance with the North American Numbering Plan Administration (NANPA) guidelines. Since 2001, ten-digit dialing has been mandatory to accommodate the area code overlay.

Historical Milestones

1947: Area code 412 was established as one of the original North American area codes.
1998: Area code 724 was split from 412 to address the growing demand for new numbers.
2001: Area code 878 was introduced as an overlay to both 412 and 724, ensuring continued availability of phone numbers.

Conclusion

Area code 412 is integral to the telecommunications landscape of Pittsburgh and its surrounding areas. Its implementation history and regulatory management reflect the region's growth and the increasing demand for connectivity. For more information on area codes and number management, visit the North American Numbering Plan Administration.

For further insights into telecommunications in Pennsylvania, consider reading related articles on area code overlays and the impact of digital communication advancements.

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