Look up any phone number starting with 231 to identify the owner name, address, spam reports, and more. The 231 area code is serving the northwestern portion of the Lower Peninsula in the U.S. state of Michigan.
Enter a full 10-digit number to identify the caller and whether it has been reported as spam.
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Phone numbers with area code 231 originate from the northwestern portion of the Lower Peninsula of Michigan, centered around the western half of the territory generally defined as Northern Michigan. It also includes Muskegon, which is part of West Michigan. Additionally, the 231 area code uniquely serves Bois Blanc Township, located in the Upper Peninsula.
Area code 231 is a general purpose code which was placed in service on June 5, 1999.
Our Michigan phone number lookup for the 231 area code analyzes the three-digit prefix to identify the initially assigned telecommunications company and rate center. This prefix code data may help to determine the U.S. carrier, Michigan geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| MICHIGAN BELL TEL CO | 66 |
| FRONTIER NORTH, INC. - MI | 45 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 38 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 26 |
| SPRINT SPECTRUM, L.P. | 14 |
| CENTURYTEL OF MICHIGAN, INC. DBA CENTURYLINK | 11 |
| TELNET WORLDWIDE, INC. | 7 |
| ACE TEL. CO. OF MICHIGAN, INC. | 5 |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 5 |
| 123.NET, INC. | 3 |
| AT&T - LOCAL | 2 |
| BANDWIDTH.COM CLEC, LLC - MI | 2 |
| CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK | 2 |
| CENTURYTEL MIDWEST-MIDWEST INC DBA CENTURYLINK | 2 |
| CHARTER FIBERLINK - MICHIGAN, LLC - MI | 2 |
| KALEVA TEL. CO. | 2 |
| LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI | 2 |
| ACD TELECOM, INC. - MI | 1 |
| AMERICAN MESSAGING SERVICES, LLC | 1 |
| CARR TEL. CO. | 1 |
| CENTURYLINK COMMUNICATIONS, LLC | 1 |
| CYNERGYCOMM.NET, INC. - MI | 1 |
| DAYSTARR, LLC DBA DAYSTARR COMMUNICATIONS - MI | 1 |
| ISLAND TEL. CO. | 1 |
| KALEVA TELEPHONE COMPANY - MI | 1 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 1 |
| PIGEON TEL. CO. | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| MUSKEGON | 48 |
| TRAVERSECY | 34 |
| PETOSKEY | 12 |
| BIG RAPIDS | 10 |
| CADILLAC | 9 |
| CHEBOYGAN | 6 |
| LUDINGTON | 6 |
| MANISTEE | 6 |
| NEWAYGO | 5 |
| CHARLEVOIX | 4 |
| GLEN LAKE | 4 |
| HARBOR SPG | 4 |
| HART | 4 |
| BELLAIRE | 3 |
| BEULAH | 3 |
| BOYNE CITY | 3 |
| FREMONT | 3 |
| KALKASKA | 3 |
| REED CITY | 3 |
| GRANT | 2 |
| HESPERIA | 2 |
| HONOR | 2 |
| LE ROY | 2 |
| LEVERING | 2 |
| MECOSTA | 2 |
| ONEKAMA | 2 |
| PENTWATER | 2 |
| SUTTONSBAY | 2 |
| WHITEHALL | 2 |
| ALANSON | 1 |
| ALBA | 1 |
| ALDEN | 1 |
| BALDWIN | 1 |
| BEAR LAKE | 1 |
| BOYNEFALLS | 1 |
| BRETHREN | 1 |
| BUCKLEY | 1 |
| CARR | 1 |
| CENTRAL LK | 1 |
| CHIPPEWALK | 1 |
| COPESHTNVL | 1 |
| EASTJORDAN | 1 |
| EASTPORT | 1 |
| ELK RAPIDS | 1 |
| ELLSWORTH | 1 |
| EVART | 1 |
| FALMOUTH | 1 |
| FIFE LAKE | 1 |
| FRANKFORT | 1 |
| FRUITPORT | 1 |
| HARRIETTA | 1 |
| HOLTON | 1 |
| HOWARDCITY | 1 |
| INDIAN RIV | 1 |
| INTERLOCHN | 1 |
| KINGSLEY | 1 |
| LAKE ANN | 1 |
| LAKE CITY | 1 |
| LKLEELANAU | 1 |
| LUTHER | 1 |
| MACKINAWCY | 1 |
| MANCELONA | 1 |
| MANTON | 1 |
| MARION | 1 |
| MCBAIN | 1 |
| MESICK | 1 |
| MOORESTOWN | 1 |
| MORLEY | 1 |
| NORTHPORT | 1 |
| OLDMISSION | 1 |
| PELLSTON | 1 |
| RAVENNA | 1 |
| SCOTTVILLE | 1 |
| SHELBY | 1 |
| SOBOARDMAN | 1 |
| ST JAMES | 1 |
| STANWOOD | 1 |
| TUSTIN | 1 |
| TWIN LAKE | 1 |
| WALLOON LK | 1 |
| WELLSTON | 1 |
| WHITECLOUD | 1 |
| WILLIAMSBG | 1 |
| WOLVERINE | 1 |
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