C
- County of Summit - Sheriffs DeptAkron, OH
- County OF Summit, OhioAkron, OH
- County of VintonMcarthur, OH
- Courtesy Ambulance, Inc.Newark, OH
- Crane Pro ServicesSpringfield, OH
- Cranel, IncorporatedColumbus, OH
- Crawford BroadcastingBucyrus, OH
- Crawford Co. Council On AgingBucyrus, OH
- Crawford County Sheriff's OfficeBucyrus, OH
- Crestline Paving And Excavating CO IncToledo, OH
- Cross Radio ServiceWarren, OH
- Crown Building COSylvania, OH
- Crown Electric Engineering And Manufacturing LlcMiddleton, OH
- Croxton, TYCanton, OH
- Csa Service Solutions, LlcWilmington, OH
- CT Communications Network, Inc.Urbana, OH
- Curtis BuildersCorning, OH
- Cusimano Frank VWarren, OH
- Custom Home Electronics Safe And SecZanesville, OH
- Custom Media Systems Dba Wellman And GriffithCleveland, OH
- Cutting Edge Services CorpBatavia, OH
- Cuyahoga Community College WestshoreWestlake, OH
- Cuyahoga, County OFCleveland, OH
- Cuztabula, LlcBeachwood, OH
- Cvco,incNew Albany, OH
D
- D & L LeasingColumbus, OH
- D A Peterson IncAlliance, OH
- D And A Plumbing And Heating IncUniontown, OH
- D And D Associated Contractors IncOberlin, OH
- D And D Lock ServiceMiddleburg Hts, OH
- D And E Electric Company, IncOkeana, OH
- D And E Electric OF Ohio, LlcCadiz, OH
- D And L Plumbing IncWesterville, OH
- D And L Services Services And Support LlcPiqua, OH
- D And M Carter LlcMiamiville, OH
- D And M Construction IncTipp City, OH
- D And T ElectricTroy, OH
- D.e. Williams Electric, Inc.Chagrin Falls, OH
- D.e.i., Inc.Cincinnati, OH
- Daifuku Automotive America CorporationReynoldsburg, OH
- Dale R. HallColumbus, OH
- Dalmatian Fire A Division OF Shambaugh And Son LPCincinnati, OH
- Dalmatian Fire A Division OF Shambaugh And Son LPLewis Center, OH
- Danbert, IncPlain City, OH
- Daniel R. Schmoldt Enterprises, Inc.Cleveland, OH
- Dannemiller, Noel FAkron, OH
- Dannys 2 Way CommunicationsCincinnati, OH
- Dannys Two Way Comm IncCincinnati, OH
- Dannys Two Way CommunicationCincinnati, OH
- Dannys Two Way CommunicationsCincinnati, OH
- Darana Hybrid IncHamilton, OH
- Dark Horse Networks, Llc.Belmont, OH
- Darke County AirportVersailles, OH
- Dasher Hodges Inc Dba Radio Communications OF OhioMarion, OH
- Dave HartupCincinnati, OH
- DaveyKent, OH
- Davey Resource Group, Inc.Kent, OH
- Davey Resource Group, Inc.Kent, OH
- Davey Tree Surgery COKent, OH
- Dayton Environmental Testing, LlcDayton, OH
- Dayton Power & Light CompanyDayton, OH
- Dayton, City OFDayton, OH
- Dean Miller Broadcasting Dba = Wmvr AM FMSidney, OH
- Deerfield Construction CO IncLoveland, OH
- Defiance County Regional Airport AuthorityDefiance, OH
- Delaware County, Dba 911 CenterDelaware, OH
- Delmar Communications, Inc.Delaware, OH
- Delta Railroad Construction IncAshtabula, OH
- Denier Electric Co., Inc.Harrison, OH
- Diebold IncorporatedNorth Canton, OH
- Diebold Nixdorf IncNorth Canton, OH
- Diebold Nixdorf IncorporatedNorth Canton, OH
- Diebold Nixdorf, IncorporatedNorth Canton, OH
- Difonzo Masonry And Cement IncEastlake, OH
- Digioia-suburban Excavating LlcNorth Royalton, OH
- Discovery DoorBedford Heights, OH
- Dispatch And Data of Ohio IncCleveland, OH
- Diversified Fall ProtectionWestlake, OH
- Diversified Piping And Mechanical IncMentor, OH
- Divine Tower International CorpColumbus, OH
- Division of Support ServicesColumbus, OH
- Divisions, Inc.Cincinnati, OH
- Dobson Cellular of California, Inc.Youngstown, OH
- Doll, Ned EOregon, OH
- Domer Communications, IncNorth Canton, OH
- Dominion Broadcasting Inc (wlmb TV 40)Toledo, OH
- Dominion Broadcasting, Inc.Toledo, OH
- Dorson CommunicationsMantua, OH
- Dory, ArthurValley View, OH
- Dot Diamond Core Drilling, Inc.Elyria, OH
- Dreamcatcher Communications, Inc.West Union, OH
- Duff Warehouse IncLima, OH
- Duff Warehouses IncLima, OH
- Dukenet Communication Services LlcCincinnati, OH
- Dunbar Mechanical IncToledo, OH
- Dunham Fire And Safety CompanyDayton, OH
- Dunn, R ScottLisbon, OH
- Durable Slate CO TheColumbus, OH