Telephone Area 231. Page 2.
Prefix: +1231
This prefix is distributed within the state Michigan
The largest city in the region is Muskegon
Time Zone: Eastern
Winter time: UTC-5
Summer time: UTC-4
Below on the map, there is indicated the largest city in the telephone area +1-231-...-.... Michigan Muskegon.
Phone numbers +1-231-YYY-YYYY
| Company | District | Major City | Prefix |
|---|---|---|---|
| Lucre | Newaygo | Newaygo, MI | +1-231452-SSSS |
| Acd Telecom | Muskegon | Muskegon, MI | +1-231457-SSSS |
| Long Distance Of Michigan DBA Ldmi | Charlevoix | Boyne City, MI | +1-231459-SSSS |
| Lucre | Mecosta | Big Rapids, MI | +1-231460-SSSS |
| Ameritech Michigan | Mason | Fountain, MI | +1-231462-SSSS |
| Cellco Partnership DBA Verizon Wireless | Grand Traverse | Traverse City, MI | +1-231463-SSSS |
| Ameritech Michigan | Mason | Free Soil, MI | +1-231464-SSSS |
| Centennial Michiana License Company LLC | Osceola | Reed City, MI | +1-231465-SSSS |
| Sprint Spectrum L.p. | Wexford | Cadillac, MI | +1-231468-SSSS |
| Kaleva Telephone Company | Manistee | Brethren, MI | +1-231477-SSSS |
| Level 3 Communications | Mason | Ludington, MI | +1-231480-SSSS |
| Lucre | Charlevoix | Boyne City, MI | +1-231482-SSSS |
| Brooks Fiber Communications Of Michigan | Grand Traverse | Traverse City, MI | +1-231486-SSSS |
| Ameritech Michigan | Emmet | Petoskey, MI | +1-231487-SSSS |
| Local Exchange Carriers Of Michigan | Manistee | Manistee, MI | +1-231488-SSSS |
| Cellco Partnership DBA Verizon Wireless | Grand Traverse | Traverse City, MI | +1-231492-SSSS |
| American Messaging (am) | Mecosta | Big Rapids, MI | +1-231494-SSSS |
| Nextel Communications | Boyne City, MI | +1-231497-SSSS | |
| Level 3 Communications | Antrim | Elk Rapids, MI | +1-231498-SSSS |
| Cellco Partnership DBA Verizon Wireless | Grand Traverse | Traverse City, MI | +1-231499-SSSS |
| Grand Traverse | +1-231503-SSSS | ||
| Kaleva Telephone Company | Onekama, MI | +1-231508-SSSS | |
| Usa Mobility Wireless | Lake | Baldwin, MI | +1-231509-SSSS |
| New Cingular Wireless PCS - IL | Grand Traverse | Traverse City, MI | +1-231510-SSSS |
| American Messaging (am) | Grand Traverse | Traverse City, MI | +1-231512-SSSS |
| American Messaging (am) | Wexford | Cadillac, MI | +1-231514-SSSS |
| Acd Telecom | Osceola | Evart, MI | +1-231515-SSSS |
| American Messaging (am) | Emmet | Petoskey, MI | +1-231516-SSSS |
| Level 3 Communications | Kalkaska | Kalkaska, MI | +1-231518-SSSS |
| Verizon Wireless (vaw) | Newaygo | Newaygo, MI | +1-231519-SSSS |
| Local Exchange Carriers Of Michigan | Charlevoix | Charlevoix, MI | +1-231520-SSSS |
| Lucre | Lake | Luther, MI | +1-231522-SSSS |
| Ameritech Michigan | Cheboygan | Wolverine, MI | +1-231525-SSSS |
| Ameritech Michigan | Emmet | Harbor Springs, MI | +1-231526-SSSS |
| Ameritech Michigan | Mecosta | Big Rapids, MI | +1-231527-SSSS |
| Centurytel Of Michigan Inc DBA Centurylink | Emmet | Brutus, MI | +1-231529-SSSS |
| American Messaging (am) | Kalkaska | Kalkaska, MI | +1-231532-SSSS |
| Frontier North | Antrim | Bellaire, MI | +1-231533-SSSS |
| AT&T Local | Grand Traverse | Traverse City, MI | +1-231534-SSSS |
| Ameritech Michigan | Charlevoix | Boyne City, MI | +1-231535-SSSS |
| Ameritech Michigan | Charlevoix | East Jordan, MI | +1-231536-SSSS |
| Centurytel Of Michigan Inc DBA Centurylink | Emmet | Levering, MI | +1-231537-SSSS |
| Local Exchange Carriers Of Michigan | Newaygo | Fremont, MI | +1-231538-SSSS |
| Ameritech Michigan | Emmet | Pellston, MI | +1-231539-SSSS |
| Lucre | Osceola | Leroy, MI | +1-231543-SSSS |
| Frontier North | Antrim | Central Lake, MI | +1-231544-SSSS |
| Centurytel Of Michigan Inc DBA Centurylink | Otsego | Elmira, MI | +1-231546-SSSS |
| Ameritech Michigan | Charlevoix | Charlevoix, MI | +1-231547-SSSS |
| Centurytel Of Michigan Inc DBA Centurylink | Emmet | Alanson, MI | +1-231548-SSSS |
| Centurytel Of Michigan Inc DBA Centurylink | Charlevoix | Boyne Falls, MI | +1-231549-SSSS |
| Lucre | Charlevoix | Charlevoix, MI | +1-231556-SSSS |
| Cellco Partnership DBA Verizon Wireless | Muskegon | Muskegon, MI | +1-231557-SSSS |
| Lucre | Muskegon | Muskegon, MI | +1-231563-SSSS |
| New Cingular Wireless PCS - IL | Kalkaska | Kalkaska, MI | +1-231564-SSSS |
| Lucre | Grand Traverse | Traverse City, MI | +1-231568-SSSS |
| American Messaging (am) | Emmet | Petoskey, MI | +1-231569-SSSS |
| New Cingular Wireless PCS - IL | Kalkaska | Fife Lake, MI | +1-231570-SSSS |
| Frontier North | Muskegon | Muskegon, MI | +1-231571-SSSS |
| Level 3 Communications | Wexford | Cadillac, MI | +1-231577-SSSS |
| Nextel Communications | Muskegon | Muskegon, MI | +1-231578-SSSS |
| Sprint Spectrum L.p. | Mecosta | Big Rapids, MI | +1-231580-SSSS |
| Ameritech Michigan | Charlevoix | Boyne City, MI | +1-231582-SSSS |
| Local Exchange Carriers Of Michigan | Mason | Ludington, MI | +1-231583-SSSS |
| Pigeon Telephone Co. | Otsego | Elmira, MI | +1-231584-SSSS |
| Pigeon Telephone Co. | Otsego | Elmira, MI | +1-231585-SSSS |
| Lake | +1-231586-SSSS | ||
| Ameritech Michigan | Antrim | Mancelona, MI | +1-231587-SSSS |
| Frontier North | Antrim | Ellsworth, MI | +1-231588-SSSS |
| Cellco Partnership DBA Verizon Wireless | Grand Traverse | Traverse City, MI | +1-231590-SSSS |
| Ameritech Michigan | Mecosta | Big Rapids, MI | +1-231591-SSSS |
| Ameritech Michigan | Mecosta | Big Rapids, MI | +1-231592-SSSS |
| Usa Mobility Wireless | Wexford | Cadillac, MI | +1-231593-SSSS |
| Lucre | Oceana | Hart, MI | +1-231594-SSSS |
| Usa Mobility Wireless | Emmet | Harbor Springs, MI | +1-231596-SSSS |
| Ameritech Michigan | Cheboygan | Cheboygan, MI | +1-231597-SSSS |
| Centennial Michiana License Company LLC | Mecosta | Big Rapids, MI | +1-231598-SSSS |
| Frontier North | Antrim | Central Lake, MI | +1-231599-SSSS |
| Usa Mobility Wireless | Kalkaska | Kalkaska, MI | +1-231604-SSSS |
| Usa Mobility Wireless | Newaygo | Newaygo, MI | +1-231605-SSSS |
| Usa Mobility Wireless | Mecosta | Big Rapids, MI | +1-231606-SSSS |
