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Area Codes > 309 > Central Office Codes

Exchange Rate Center State Operating Company
309-426 ROSEVILLE IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-427 PEORIA IL AMERITECH ILLINOIS
309-428 PEORIA IL ARCH WIRELESS HOLDINGS, INC.
309-429 PEORIA IL ARCH WIRELESS HOLDINGS, INC.
309-430 PEORIA IL ARCH WIRELESS HOLDINGS, INC.
309-431 PEORIA IL MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL
309-432 MINONK IL VERIZON NORTH INC.-IL
309-433 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-434 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-435 PEORIA IL MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL
309-436 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-437 PEORIA IL MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL
309-438 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-439 PEORIA IL MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- IL
309-440 DEER CREEK IL BITWISE COMMUNICATIONS, INC. - IL
309-441 GREENRIVER IL GENESEO TELEPHONE CO.
309-442 BRIMFIELD IL BITWISE COMMUNICATIONS, INC. - IL
309-443 LOW POINT IL VERIZON NORTH INC.-IL
309-444 WASHINGTON IL VERIZON NORTH INC.-IL
309-446 BRIMFIELD IL VERIZON NORTH INC.-IL
309-447 DEER CREEK IL VERIZON SOUTH INC.-IL (ALLTEL)
309-448 CONGERVL IL VERIZON SOUTH INC.-IL (ALLTEL)
309-449 HOPEDALE IL VERIZON NORTH INC.-IL
309-450 CONGERVL IL BITWISE COMMUNICATIONS, INC. - IL
309-451 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-452 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-453 PEORIA IL SPRINT SPECTRUM L.P.- IL
309-454 BLOOMINGTN IL VERIZON NORTH INC.-IL
309-455 HOPEDALE IL BITWISE COMMUNICATIONS, INC. - IL
309-456 GOOD HOPE IL MCDONOUGH TELEPHONE COOPERATIVE
309-457 MONMOUTH IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-458 PLYMOUTH IL ADAMS TELEPHONE COOPERATIVE
309-460 LOW POINT IL BITWISE COMMUNICATIONS, INC. - IL
309-461 MINONK IL BITWISE COMMUNICATIONS, INC. - IL
309-462 ABINGDON IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-463 VARNA IL VERIZON NORTH INC.-IL
309-464 NOHENDERSN IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-465 AVON IL GALLATIN RIVER COMMUNICATIONS
309-466 EUREKA IL BITWISE COMMUNICATIONS, INC. - IL
309-467 EUREKA IL VERIZON NORTH INC.-IL
309-468 LE ROY IL LEVEL 3 COMMUNICATIONS, LLC - IL
309-469 SPARLAND IL VERIZON NORTH INC.-IL
309-470 PEORIA IL AMERITECH ILLINOIS
309-471 SPARLAND IL BITWISE COMMUNICATIONS, INC. - IL
309-472 PEORIA IL SPRINT SPECTRUM L.P.- IL
309-473 HEYWORTH IL VERIZON NORTH INC.-IL
309-474 VARNA IL BITWISE COMMUNICATIONS, INC. - IL
309-475 SAYBROOK IL VERIZON NORTH INC.-IL
309-476 ANDOVER IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-477 PEKIN IL GALLATIN RIVER COMMUNICATIONS
309-478 PEKIN IL GALLATIN RIVER COMMUNICATIONS
309-479 CASTLETON IL VERIZON NORTH INC.-IL
309-480 CASTLETON IL BITWISE COMMUNICATIONS, INC. - IL
309-481 WASHINGTON IL BITWISE COMMUNICATIONS, INC. - IL
309-482 ALEXIS IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-483 ONEIDA IL ONEIDA TELEPHONE EXCHANGE
309-484 ALTONA IL MID-CENTURY TELEPHONE COOPERATIVE
309-485 HUDSON IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-486 LONDON ML IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-487 DOWNS IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-488 FARMERCITY IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-489 GENESEO IL NEXTEL COMMUNICATIONS, INC.
309-490 LEXINGTON IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-491 MCLEAN IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-492 CAMPGROVE IL BITWISE COMMUNICATIONS, INC. - IL
309-493 CAMPGROVE IL VERIZON NORTH INC.-IL
309-494 PEORIA IL AMERITECH ILLINOIS
309-495 PEORIA IL AMERITECH ILLINOIS
309-496 HAMPTON IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-497 PEORIA IL AMERITECH ILLINOIS
309-498 HEYWORTH IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-499 LE ROY IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-500 IL
309-501 WASHINGTON IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-502 GENESEO IL SPRINT SPECTRUM L.P.- IL
309-503 TOWANDA IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-504 DANVERS IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-505 SUNNYLAND IL BITWISE COMMUNICATIONS, INC. - IL
309-507 GENESEO IL UNITED STATES CELLULAR CORP. - ILLINOIS
309-508 METAMORA IL MTCO COMMUNICATIONS, INC.
309-509 GALESBURG IL TMP CORP.
309-511 IL
309-514 ALBANY IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-515 ERIE IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-517 MOLINE IL SPRINT COMMUNICATIONS COMPANY, L.P. - IL
309-518 LEWISTOWN IL LEVEL 3 COMMUNICATIONS, LLC - IL
309-521 ANDOVER IL CAMBRIDGE TELEPHONE CO.
309-522 OSCO IL CAMBRIDGE TELEPHONE CO.
309-523 PORT BYRON IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-524 MOLINE IL AMERITECH ILLINOIS
309-525 KEWANEE IL UNITED STATES CELLULAR CORP. - ILLINOIS
309-526 ORION IL FRONTIER COMMUNICATIONS OF ORION, INC.
309-527 EL PASO IL EL PASO TELEPHONE CO.
309-528 BLOOMINGTN IL AMERICAN MESSAGING (AM), INC.
309-529 ALPHA IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
309-530 BLOOMINGTN IL NEW CINGULAR WIRELESS PCS, LLC - IL
309-531 BLOOMINGTN IL NEW CINGULAR WIRELESS PCS, LLC - IL
309-532 BLOOMINGTN IL NEW CINGULAR WIRELESS PCS, LLC - IL
309-533 BLOOMINGTN IL NEW CINGULAR WIRELESS PCS, LLC - IL
309-534 PREEMPTION IL CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL