10-digit dialing is required for all local calls within area code 231.

Muskegon, Michigan is covered by area code 231.

Area code 231 was created in June 1999.

Area code 231 covers the northwestern Lower Peninsula of Michigan.

It was created from a split of area code 616 to accommodate the growing need for phone numbers in the region.

The NPA code is 231.

Major cities covered include Muskegon, Norton Shores, and Shelby.

Landline, wireless, and VoIP services are available.

While a map was mentioned in the article, it wasn't available. You might find map resources on the NANPA or FCC websites.

The North American Numbering Plan Administration (NANPA) regulates area code 231.

You can check the North American Numbering Plan Administration (NANPA) website for that information.

Area code 231 was split from area code 616.

Norton Shores is located at approximately 43.1689 latitude and -86.26395 longitude.

Muskegon, Michigan is in area code 231. This area code covers the northwestern Lower Peninsula of Michigan and was introduced in June 1999. Other cities within this area code include Norton Shores and Shelby.

Area code 231 was created in June 1999. It was split from area code 616, which previously covered a larger area in western Michigan's Lower Peninsula. This split helped ensure continued number availability in the growing region.

Area code 231 covers the northwestern Lower Peninsula of Michigan. Key cities in this area code include Muskegon, Norton Shores, and Shelby. The area code was introduced in June 1999 as a split from the existing area code 616.

You need to use 10-digit dialing for local calls within area code 231. This means dialing both the area code and the seven-digit phone number, ensuring accurate routing of calls within the Michigan telecommunications system. This is in accordance with NANPA regulations.

The Numbering Plan Area (NPA) code for northwestern Michigan is 231. This NPA, implemented in June 1999, covers cities such as Muskegon and Norton Shores. It's a single code covering this specific region within the North American Numbering Plan.

Area code 231 covers major Michigan cities including Muskegon, Norton Shores, and Shelby. This area code serves the northwestern portion of the Lower Peninsula and was established in June 1999.

Area code 231 supports various phone services including landline, wireless, and VoIP. This area code serves the northwestern region of Michigan's Lower Peninsula, including cities like Muskegon and Norton Shores.

Area code 231, along with other North American area codes, is regulated by the North American Numbering Plan Administration (NANPA). NANPA manages area code assignments, splits, and overlays to ensure there are enough phone numbers for everyone.

For more information on area code 231, you can check the North American Numbering Plan Administration (NANPA) website for specific details like utilization rates and exhaust projections. The Federal Communications Commission (FCC) website offers information on telecommunications regulations.