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Area Codes > 815 > Central Office Codes

Exchange Rate Center State Operating Company
815-602 KANKAKEE IL GLOBALCOM, INC.-IL
815-603 JOLIET IL T-MOBILE USA, INC.
815-604 GRANDDTOUR IL ESSEX TELCOM, INC.
815-605 GRANT PARK IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-606 OTTAWA IL GLOBALCOM, INC.-IL
815-607 FLANAGAN IL BITWISE COMMUNICATIONS, INC. - IL
815-608 ROCKFORD IL T-MOBILE USA, INC.
815-609 PLAINFIELD IL AMERITECH ILLINOIS
815-610 CORNELL IL BITWISE COMMUNICATIONS, INC. - IL
815-611 IL
815-612 GRAYMONT IL BITWISE COMMUNICATIONS, INC. - IL
815-613 MT CARROLL IL ESSEX TELCOM, INC.
815-614 KANKAKEE IL BROADWING COMMUNICATIONS, LLC - IL
815-615 MENDOTA IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-616 FREEPORT IL T-MOBILE USA, INC.
815-617 OTTAWA IL AT&T LOCAL
815-618 FREEPORT IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-619 ROCKTON IL AERO COMMUNICATIONS, INC. - IL
815-620 HOOPPOLE IL ESSEX TELCOM, INC.
815-621 ROCKFORD IL SPRINT SPECTRUM L.P.
815-622 STERLING IL AMERITECH ILLINOIS
815-623 ROSCOE IL VERIZON NORTH INC.-IL
815-624 ROCKTON IL VERIZON NORTH INC.-IL
815-625 STERLING IL AMERITECH ILLINOIS
815-626 STERLING IL AMERITECH ILLINOIS
815-627 PAW PAW IL VERIZON NORTH INC.-IL
815-628 W BROOKLYN IL VERIZON NORTH INC.-IL
815-629 SHIRLAND IL VERIZON NORTH INC.-IL
815-630 JOLIET IL T-MOBILE USA, INC.
815-631 STERLING IL AMERITECH ILLINOIS
815-632 STERLING IL AMERITECH ILLINOIS
815-633 ROCKFORD IL AMERITECH ILLINOIS
815-634 COAL CITY IL AMERITECH ILLINOIS
815-635 CHATSWORTH IL VERIZON NORTH INC.-IL
815-636 ROCKFORD IL AMERITECH ILLINOIS
815-637 ROCKFORD IL AMERITECH ILLINOIS
815-638 LA MOILLE IL VERIZON NORTH INC.-IL
815-639 ROCKFORD IL AMERITECH ILLINOIS
815-640 OTTAWA IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
815-641 JOLIET IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-642 MINOOKA IL BROADWING COMMUNICATIONS, LLC - IL
815-643 DOVER IL VERIZON NORTH INC.-IL
815-644 CRESCENTCY IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-645 STILMANVLY IL VERIZON NORTH INC.-IL
815-646 TISKILWA IL VERIZON NORTH INC.-IL
815-647 CULLOM IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
815-648 HEBRON IL VERIZON NORTH INC.-IL
815-649 GARDNER IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-650 FREEPORT IL AT&T LOCAL
815-651 JOLIET IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-652 GRANDDTOUR IL GALLATIN RIVER COMMUNICATIONS
815-653 WONDERLAKE IL VERIZON NORTH INC.-IL
815-654 ROCKFORD IL AMERITECH ILLINOIS
815-655 COLETA IL ESSEX TELCOM, INC.
815-656 FREEPORT IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-657 FORREST IL AMERITECH ILLINOIS
815-658 LANARK IL ESSEX TELCOM, INC.
815-659 BUREAU IL VERIZON NORTH INC.-IL
815-660 LOCKPORT IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-661 MORRIS IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-662 MOMENCE IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-663 SPRING VLY IL VERIZON NORTH INC.-IL
815-664 SPRING VLY IL VERIZON NORTH INC.-IL
815-665 OTTAWA IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-666 JOLIET IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-667 UTICA IL AMERITECH ILLINOIS
815-668 JOLIET IL AMERICAN MESSAGING (AM), INC.
815-669 MCHENRY IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-670 ROCKFORD IL SPRINT SPECTRUM L.P.
815-671 JOLIET IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-672 STREATOR IL VERIZON NORTH INC.-IL
815-673 STREATOR IL VERIZON NORTH INC.-IL
815-674 STREATOR IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-675 SPRING GRV IL VERIZON NORTH INC.-IL
815-676 PLAINFIELD IL LEVEL 3 COMMUNICATIONS, LLC - IL
815-677 DIXON IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
815-678 RICHMOND IL VERIZON NORTH INC.-IL
815-679 MCHENRY IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-680 MANHATTAN IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-681 ROCKFORD IL COST PLUS COMMUNICATIONS, LLC - IL
815-682 STOCKLAND IL VERIZON SOUTH INC.-IL (ALLTEL)
815-683 CRESCENTCY IL AMERITECH ILLINOIS
815-684 CHADWICK IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
815-685 JOLIET IL NEW CINGULAR WIRELESS PCS, LLC - IL
815-686 PIPER CITY IL VERIZON NORTH INC.-IL
815-687 WOODSTOCK IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-688 STRAWN IL VERIZON NORTH INC.-IL
815-689 CULLOM IL FRONTIER COMMUNICATIONS OF ILLINOIS, INC.
815-690 JOLIET IL UNITED STATES CELLULAR CORP. - ILLINOIS
815-691 UTICA IL RCN TELECOM SERVICES OF ILLINOIS, INC. - IL
815-692 FAIRBURY IL VERIZON NORTH INC.-IL
815-693 JOLIET IL NEXTEL COMMUNICATIONS, INC.
815-694 CLIFTON IL VERIZON NORTH INC.-IL
815-695 NEWARK IL AMERITECH ILLINOIS
815-696 ROSCOE IL AERO COMMUNICATIONS, INC. - IL
815-697 CHEBANSE IL VERIZON NORTH INC.-IL
815-698 ASHKUM IL VERIZON NORTH INC.-IL
815-699 WYANET IL VERIZON NORTH INC.-IL
815-700 IL
815-701 WOODSTOCK IL LEVEL 3 COMMUNICATIONS, LLC - IL