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Central Office Codes

Exchange Rate Center State Operating Company
248-568 PONTIAC MI CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI
248-569 SOUTHFIELD MI AMERITECH MICHIGAN
248-570 PONTIAC MI AMERICAN MESSAGING (AM), INC.
248-572 OXFORD MI TELEPORT COMMUNICATIONS GROUP AMERICA - MI
248-573 SOUTH LYON MI TELEPORT COMMUNICATIONS GROUP AMERICA - MI
248-574 WALLEDLAKE MI CLEAR RATE COMMUNICATIONS, INC. -MI
248-575 CLARKSTON MI XO MICHIGAN, INC.
248-576 PONTIAC MI AMERITECH MICHIGAN
248-577 ROYAL OAK MI AMERITECH MICHIGAN
248-578 NORTHVILLE MI ARCH WIRELESS HOLDINGS, INC.
248-579 FARMINGTON MI LEVEL 3 COMMUNICATIONS, LLC - MI
248-580 PONTIAC MI ARCH WIRELESS HOLDINGS, INC.
248-581 ROYAL OAK MI MCI WORLDCOM COMMUNICATIONS, INC. - MI
248-582 ROYAL OAK MI AMERITECH MICHIGAN
248-583 ROYAL OAK MI AMERITECH MICHIGAN
248-584 ROYAL OAK MI AMERITECH MICHIGAN
248-585 ROYAL OAK MI AMERITECH MICHIGAN
248-586 ROYAL OAK MI AMERITECH MICHIGAN
248-587 SOUTH LYON MI PHONE MICHIGAN
248-588 ROYAL OAK MI AMERITECH MICHIGAN
248-589 ROYAL OAK MI AMERITECH MICHIGAN
248-591 ROYAL OAK MI AMERITECH MICHIGAN
248-592 W BLOOMFLD MI AMERITECH MICHIGAN
248-593 BIRMINGHAM MI AMERITECH MICHIGAN
248-594 BIRMINGHAM MI AMERITECH MICHIGAN
248-595 SOUTHFIELD MI GRID 4 COMMUNICATIONS, INC. - MI
248-596 NORTHVILLE MI AMERITECH MICHIGAN
248-597 ROYAL OAK MI AMERITECH MICHIGAN
248-598 AUBURN HTS MI GLOBAL CROSSING TELEMANAGEMENT, INC.-MI
248-599 DRAYTON PL MI ZENK GROUP LTD. DBA PLANET ACCESS - MI
248-601 ROCHESTER MI AMERITECH MICHIGAN
248-603 SOUTHFIELD MI AMERITECH MICHIGAN
248-604 SOUTHFIELD MI ARCH WIRELESS HOLDINGS, INC.
248-605 CLARKSTON MI LEVEL 3 COMMUNICATIONS, LLC - MI
248-606 AUBURN HTS MI AMERITECH MICHIGAN
248-608 ROCHESTER MI AMERITECH MICHIGAN
248-609 ROCHESTER MI LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI
248-610 PONTIAC MI ARCH WIRELESS HOLDINGS, INC.
248-611 MI
248-612 HOLLY MI AMERICAN MESSAGING (AM), INC.
248-613 PONTIAC MI NEW CINGULAR WIRELESS PCS, LLC - IL
248-614 BIRMINGHAM MI AMERITECH MICHIGAN
248-615 FARMINGTON MI AMERITECH MICHIGAN
248-616 ROYAL OAK MI AMERITECH MICHIGAN
248-618 DRAYTON PL MI AMERITECH MICHIGAN
248-619 TROY MI AMERITECH MICHIGAN
248-620 CLARKSTON MI AMERITECH MICHIGAN
248-622 PONTIAC MI NEW CINGULAR WIRELESS PCS, LLC - IL
248-623 DRAYTON PL MI AMERITECH MICHIGAN
248-624 WALLEDLAKE MI AMERITECH MICHIGAN
248-625 CLARKSTON MI AMERITECH MICHIGAN
248-626 W BLOOMFLD MI AMERITECH MICHIGAN
248-627 ORTONVILLE MI VERIZON NORTH INC.-MI
248-628 OXFORD MI AMERITECH MICHIGAN
248-629 ROYAL OAK MI AT&T LOCAL
248-630 PONTIAC MI GLOBAL CROSSING TELEMANAGEMENT, INC.-MI
248-631 BIRMINGHAM MI AT&T LOCAL
248-632 ROYAL OAK MI NEXTEL COMMUNICATIONS, INC.
248-633 BIRMINGHAM MI LOCAL EXCHANGE CARRIERS OF MICHIGAN, INC.-MI
248-634 HOLLY MI AMERITECH MICHIGAN
248-635 TROY MI OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS LLC
248-636 PONTIAC MI LEVEL 3 COMMUNICATIONS, LLC - MI
248-637 BIRMINGHAM MI AMERITECH MICHIGAN
248-640 SOUTHFIELD MI NEXTEL COMMUNICATIONS, INC.
248-641 BIRMINGHAM MI AMERITECH MICHIGAN
248-642 BIRMINGHAM MI AMERITECH MICHIGAN
248-643 BIRMINGHAM MI AMERITECH MICHIGAN
248-644 BIRMINGHAM MI AMERITECH MICHIGAN
248-645 BIRMINGHAM MI AMERITECH MICHIGAN
248-646 BIRMINGHAM MI AMERITECH MICHIGAN
248-647 BIRMINGHAM MI AMERITECH MICHIGAN
248-648 PONTIAC MI AT&T LOCAL
248-649 BIRMINGHAM MI AMERITECH MICHIGAN
248-650 ROCHESTER MI AMERITECH MICHIGAN
248-651 ROCHESTER MI AMERITECH MICHIGAN
248-652 ROCHESTER MI AMERITECH MICHIGAN
248-654 ROYAL OAK MI XO MICHIGAN, INC.
248-655 ROYAL OAK MI AMERITECH MICHIGAN
248-656 ROCHESTER MI AMERITECH MICHIGAN
248-658 ROYAL OAK MI PHONE MICHIGAN
248-659 ROCHESTER MI XO MICHIGAN, INC.
248-660 HOLLY MI PHONE MICHIGAN
248-661 W BLOOMFLD MI AMERITECH MICHIGAN
248-662 NORTHVILLE MI PHONE MICHIGAN
248-663 SOUTHFIELD MI PHONE MICHIGAN
248-664 MILFDWH LK MI PHONE MICHIGAN
248-665 SOUTHFIELD MI PHONE MICHIGAN
248-666 DRAYTON PL MI AMERITECH MICHIGAN
248-667 SOUTH LYON MI PHONE MICHIGAN
248-668 WALLEDLAKE MI AMERITECH MICHIGAN
248-669 WALLEDLAKE MI AMERITECH MICHIGAN
248-670 TROY MI NEXTEL COMMUNICATIONS, INC.
248-671 W BLOOMFLD MI ALLEGIANCE TELECOM OF MICHIGAN, INC.
248-672 PONTIAC MI CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI
248-673 DRAYTON PL MI AMERITECH MICHIGAN
248-674 DRAYTON PL MI AMERITECH MICHIGAN
248-675 NORTHVILLE MI TELEPORT COMMUNICATIONS GROUP AMERICA - MI
248-676 MILFDWH LK MI VERIZON NORTH INC.-MI
248-677 ROYAL OAK MI TELEPORT COMMUNICATIONS GROUP AMERICA - MI
248-678 AUBURN HTS MI PHONE MICHIGAN