What is the purpose of area code 331?

Area code 331 was introduced as an overlay to the existing 630 area code to meet the increasing demand for phone numbers in Chicago's western suburbs.

When was area code 331 implemented?

Area code 331 was implemented on October 7, 2007.

Which major cities are covered by area code 331?

Major cities covered by area code 331 include Addison, North Aurora, Bartlett, Batavia, Bensenville, Bloomingdale, Bolingbrook, Carol Stream, and others in Chicago's western suburbs.

What counties does area code 331 serve?

Area code 331 serves parts of DuPage, Cook, Kane, and Will counties in Illinois.

Why was area code 331 introduced?

Area code 331 was introduced to accommodate the growing need for additional phone numbers in the region.

What are the dialing requirements for area code 331?

Ten-digit dialing is mandatory for area code 331.

Which regulatory body oversees area code 331?

The Illinois Commerce Commission (ICC) regulates area code 331.

Which telecommunications carriers operate within area code 331?

Major carriers such as AT&T, Verizon, T-Mobile, and Sprint operate within area code 331.

What services do carriers provide in area code 331?

Carriers provide landline, wireless, and Voice over Internet Protocol (VoIP) services in area code 331.

What is the historical significance of area code 630 related to area code 331?

Area code 630 was created from a split of area code 708 on August 3, 1996, and area code 331 was introduced as an overlay to 630 in 2007.

Is area code 331 part of the North American Numbering Plan?

Yes, area code 331 is part of the North American Numbering Plan, managed by the North American Numbering Plan Administration (NANPA).

How does area code 331 affect businesses in the region?

Area code 331 ensures that businesses have access to the necessary telecommunications services to support their operations and communications needs.

Can I choose my carrier within area code 331?

Yes, residents and businesses can choose from several major carriers such as AT&T, Verizon, T-Mobile, and Sprint.

What type of phone numbers are available in area code 331?

Both residential and business phone numbers are available in area code 331.

Is area code 331 used for VoIP services?

Yes, area code 331 supports Voice over Internet Protocol (VoIP) services.

How does area code 331 impact residential telecommunications?

Area code 331 ensures that residents in the region have sufficient access to phone numbers and telecommunications services.

What should I do if I have trouble with my service in area code 331?

Contact your local telecom provider for assistance if you experience service issues within area code 331.

Does area code 331 cover the city of Naperville?

Yes, Naperville is one of the cities covered by area code 331.

How does the ICC regulate area code 331?

The Illinois Commerce Commission (ICC) oversees telecommunications services, ensuring compliance with state regulations and guidelines.

Area Code 331: Cities, Coverage, and Telecom Insights

Area Code 331 is an essential part of the telecommunications infrastructure in Chicago's western suburbs. Serving parts of DuPage, Cook, Kane, and Will counties in Illinois, this area code supports a growing population and is vital for both residential and business communications.

What Is Area Code 331?

Area Code 331 is an overlay for the existing 630 area code, introduced to meet the increasing demand for phone numbers in the region. Implemented on October 7, 2007, it ensures that residents and businesses in Chicago's western suburbs continue to have access to necessary telecommunications services.

Geographic Coverage of Area Code 331

Area Code 331 covers a wide range of cities in Chicago's western suburbs. Here are some of the major cities included in this area code:

City	Latitude	Longitude
Addison, IL	41.9317	-87.98896
North Aurora, IL	41.80614	-88.3273
Bartlett, IL	41.99503	-88.18563
Batavia, IL	41.85003	-88.31257
Bensenville, IL	41.95503	-87.94007
Bloomingdale, IL	41.95753	-88.0809
Bolingbrook, IL	41.69864	-88.0684
Carol Stream, IL	41.91253	-88.13479
Darien, IL	41.75198	-87.97395
Downers Grove, IL	41.80892	-88.01117
Elmhurst, IL	41.89947	-87.94034
Glen Ellyn, IL	41.87753	-88.06701
Glendale Heights, IL	41.91031	-88.07174
Hanover Park, IL	41.99947	-88.14507
Lisle, IL	41.80114	-88.07479
Lombard, IL	41.88003	-88.00784
Naperville, IL	41.78586	-88.14729
Roselle, IL	41.98475	-88.07979
Saint Charles, IL	41.91419	-88.30869
Streamwood, IL	42.02558	-88.17841
Villa Park, IL	41.88975	-87.98895
West Chicago, IL	41.88475	-88.20396
Westmont, IL	41.79586	-87.97562
Wheaton, IL	41.86614	-88.10701
Woodridge, IL	41.74697	-88.05034

Telecom Services and Carriers

Area Code 331 is supported by major telecommunications carriers, offering a variety of services:

AT&T
Verizon
T-Mobile
Sprint

These carriers provide both landline and wireless services, including Voice over Internet Protocol (VoIP) options, to ensure comprehensive coverage and connectivity.

Regulatory Information

Area Code 331 is regulated by the Illinois Commerce Commission (ICC), which oversees telecommunications services within the state. The North American Numbering Plan Administration (NANPA) also plays a critical role in managing numbering resources, ensuring compliance with national guidelines.

Dialing Requirements: Ten-digit dialing is mandatory.
Regulatory Body: Illinois Commerce Commission (ICC)

Historical Context

August 3, 1996: Area code 630 was created from a split of area code 708.
October 7, 2007: 331 was introduced as an overlay to accommodate the growing need for additional phone numbers.

Conclusion

Area Code 331 is a vital component of the telecommunications framework in Chicago's western suburbs. It supports a diverse range of services and meets the region's growing demand for phone numbers. For more information on area codes and telecommunications regulations, visit the North American Numbering Plan Administration (NANPA).

Explore more about area codes in Illinois by checking out related articles on our site. For specific queries or assistance, contact your local telecom provider.

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