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Area Codes > 231 > Central Office Codes

Exchange Rate Center State Operating Company
231-539 PELLSTON MI AMERITECH MICHIGAN
231-543 LE ROY MI LUCRE, INC.
231-544 CENTRAL LK MI VERIZON NORTH INC.-MI
231-546 ELMIRA MI CENTURYTEL OF MICHIGAN, INC.
231-547 CHARLEVOIX MI AMERITECH MICHIGAN
231-548 ALANSON MI CENTURYTEL OF MICHIGAN, INC.
231-549 BOYNEFALLS MI CENTURYTEL OF MICHIGAN, INC.
231-555 GDRPBL1JB MI AMERITECH MICHIGAN
231-556 CHARLEVOIX MI LUCRE, INC.
231-557 MUSKEGON MI CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI
231-563 MUSKEGON MI LUCRE, INC.
231-564 KALKASKA MI DOBSON CELLULAR SYSTEMS, INC.
231-568 TRAVERSECY MI LUCRE, INC.
231-569 PETOSKEY MI AMERICAN MESSAGING (AM), INC.
231-570 FIFE LAKE MI DOBSON CELLULAR SYSTEMS, INC.
231-571 MUSKEGON MI VERIZON NORTH INC.-MI
231-577 CADILLAC MI LEVEL 3 COMMUNICATIONS, LLC - MI
231-578 MUSKEGON MI NEXTEL COMMUNICATIONS, INC.
231-580 BIG RAPIDS MI SPRINT SPECTRUM L.P.- MI
231-582 BOYNE CITY MI AMERITECH MICHIGAN
231-583 LUDINGTON MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-584 ALBA MI PIGEON TELEPHONE CO.
231-585 LAKE NORTH MI PIGEON TELEPHONE CO.
231-587 MANCELONA MI AMERITECH MICHIGAN
231-588 ELLSWORTH MI VERIZON NORTH INC.-MI
231-590 TRAVERSECY MI ALLTEL COMMUNICATIONS, INC. - MI
231-591 BIG RAPIDS MI AMERITECH MICHIGAN
231-592 BIG RAPIDS MI AMERITECH MICHIGAN
231-593 CADILLAC MI ARCH WIRELESS HOLDINGS, INC.
231-594 HART MI LUCRE, INC.
231-596 HARBOR SPG MI ARCH WIRELESS HOLDINGS, INC.
231-597 CHEBOYGAN MI AMERITECH MICHIGAN
231-598 BIG RAPIDS MI CENTENNIAL MICHIANA LICENSE COMPANY LLC
231-599 EASTPORT MI VERIZON NORTH INC.-MI
231-604 KALKASKA MI ARCH WIRELESS HOLDINGS, INC.
231-605 NEWAYGO MI ARCH WIRELESS HOLDINGS, INC.
231-606 BIG RAPIDS MI ARCH WIRELESS HOLDINGS, INC.
231-607 CHEBOYGAN MI ARCH WIRELESS HOLDINGS, INC.
231-608 FRANKFORT MI ARCH WIRELESS HOLDINGS, INC.
231-611 MI
231-613 SCOTTVILLE MI CARR TELEPHONE CO.
231-614 PENTWATER MI LUCRE, INC.
231-615 CHEBOYGAN MI AMERICAN MESSAGING (AM), INC.
231-620 TRAVERSECY MI DOBSON CELLULAR SYSTEMS, INC.
231-622 PETOSKEY MI LEVEL 3 COMMUNICATIONS, LLC - MI
231-623 WOLVERINE MI LUCRE, INC.
231-624 KALKASKA MI NEXTEL COMMUNICATIONS, INC.
231-625 CHEBOYGAN MI AMERITECH MICHIGAN
231-627 CHEBOYGAN MI AMERITECH MICHIGAN
231-628 MANISTEE MI AMERICAN MESSAGING (AM), INC.
231-629 BIG RAPIDS MI NEXTEL COMMUNICATIONS, INC.
231-631 TRAVERSECY MI ALLTEL COMMUNICATIONS, INC. - MI
231-632 TRAVERSECY MI DOBSON CELLULAR SYSTEMS, INC.
231-633 TRAVERSECY MI DOBSON CELLULAR SYSTEMS, INC.
231-634 BOIS BLANC MI ISLAND TELEPHONE CO.
231-635 MACKINAWCY MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-636 HOWARDCITY MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-637 NORTHPORT MI TELNET WORLDWIDE, INC.
231-638 MUSKEGON MI NEXTEL COMMUNICATIONS, INC.
231-639 BEULAH MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-640 LAKE ANN MI DOBSON CELLULAR SYSTEMS, INC.
231-642 TRAVERSECY MI NEXTEL COMMUNICATIONS, INC.
231-643 MORLEY MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-644 BRETHREN MI LUCRE, INC.
231-645 TRAVERSECY MI DOBSON CELLULAR SYSTEMS, INC.
231-646 ELLSWORTH MI VERIZON NORTH INC.-MI
231-647 CORAL MI TELNET WORLDWIDE, INC.
231-648 HOWARDCITY MI LUCRE, INC.
231-649 TRAVERSECY MI ALLTEL COMMUNICATIONS, INC. - MI
231-651 BEULAH MI DOBSON CELLULAR SYSTEMS, INC.
231-652 NEWAYGO MI AMERITECH MICHIGAN
231-656 KALKASKA MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-660 BIG RAPIDS MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-662 DUBLIN MI LUCRE, INC.
231-667 MARION MI DOBSON CELLULAR SYSTEMS, INC.
231-668 TRAVERSECY MI LEVEL 3 COMMUNICATIONS, LLC - MI
231-670 MUSKEGON MI CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI
231-672 MUSKEGON MI AT&T LOCAL
231-674 GRANT MI LEVEL 3 COMMUNICATIONS, LLC - MI
231-675 BOYNE CITY MI DOBSON CELLULAR SYSTEMS, INC.
231-676 BELLAIRE MI DOBSON CELLULAR SYSTEMS, INC.
231-677 BALDWIN MI CARR TELEPHONE CO.
231-678 BRETHREN MI ACD TELECOM, INC. - MI
231-679 BIG RAPIDS MI ALLTEL COMMUNICATIONS, INC. - MI
231-680 REED CITY MI LEVEL 3 COMMUNICATIONS, LLC - MI
231-681 FRUITPORT MI VERIZON NORTH INC.-MI
231-682 ALDEN MI TELNET WORLDWIDE, INC.
231-683 MUSKEGON MI LEVEL 3 COMMUNICATIONS, LLC - MI
231-686 FRANKFORT MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
231-689 WHITECLOUD MI AMERITECH MICHIGAN
231-690 LUDINGTON MI ALLTEL COMMUNICATIONS, INC. - MI
231-693 INDIAN RIV MI LUCRE, INC.
231-694 BEULAH MI LUCRE, INC.
231-695 HOWARDCITY MI TELNET WORLDWIDE, INC.
231-697 BELLAIRE MI LUCRE, INC.
231-698 HARRIETTA MI LUCRE, INC.
231-700 MI
231-704 FREESOIL MI ARCH WIRELESS HOLDINGS, INC.
231-709 TRAVERSECY MI DOBSON CELLULAR SYSTEMS, INC.
231-711 MI