| OUI Prefix | Vendor | Full Name |
|---|---|---|
| 80:D0:65/24 | CKS | CKS Corporation |
| E0:C0:D1/24 | CKTelecom | CK Telecom (Shenzhen) Limited |
| B8:64:91/24 | CKTelecom | CK Telecom Ltd |
| DC:E8:38/24 | CKTelecom | CK Telecom (Shenzhen) Limited |
| 38:9F:5A/24 | CKurTV | C-Kur TV Inc. |
| 1C:87:74:D/28 | Claber | Claber Spa |
| E8:18:63:1/28 | clabsys | clabsys |
| 04:81:AE/24 | Clack | Clack Corporation |
| 8C:1F:64:47:6/36 | ClairGlobal | Clair Global Corporation |
| BC:DF:E1:E/28 | ClairvoyantT | Clairvoyant Technology Inc. |
| 58:67:7F/24 | ClareControl | Clare Controls Inc. |
| 70:B3:D5:48:5/36 | Claresys | Claresys Limited |
| 48:D8:FE/24 | ClarIDySolut | ClarIDy Solutions, Inc. |
| 00:60:16/24 | Clariion | Clariion |
| 00:10:9D/24 | Clarinet | Clarinet Systems, Inc. |
| 00:60:6F/24 | ClarionAmeri | Clarion Corporation Of America |
| 00:0B:4C/24 | ClarionSdnBh | Clarion (M) Sdn Bhd |
| 5C:8D:FD/24 | Clariphotoni | Clariphotonics CO., Ltd |
| 00:1D:6C/24 | ClariPhyComm | ClariPhy Communications, Inc. |
| 00:0A:F1/24 | ClarityDesig | Clarity Design, Inc. |
| 18:D7:93:9/28 | ClarityMedic | Clarity Medical Pvt Ltd |
| 70:B3:D5:C0:D/36 | ClarityMedic | Clarity Medical Pvt Ltd |
| 40:D8:55:0C:F/36 | ClarkMXR | Clark-MXR, Inc. |
| F8:02:78:4/28 | CLARUSKorea | CLARUS Korea Co., Ltd |
| 8C:1F:64:3B:B/36 | ClausalCompu | Clausal Computing Oy |
| 40:84:93/24 | Clavister | Clavister AB |
| FC:E2:3F/24 | ClayPaky | Clay Paky Spa |
| 00:1C:20/24 | CLBBenelux | CLB Benelux |
| 00:05:8F/24 | CLCsoft | CLCsoft co. |
| 8C:1F:64:B9:1/36 | ClealinkTech | Clealink Technology |
| 70:B3:D5:C5:F/36 | CleanLasersy | Clean-Lasersysteme GmbH |
| 8C:1F:64:0E:6/36 | CleanwattsDi | Cleanwatts Digital, S.A. |
| C4:E7:33/24 | ClearAlign | Clear Align LLC |
| 00:21:10/24 | Clearbox | Clearbox Systems |
| 34:04:9E:C/28 | ClearCaption | ClearCaptions LLC |
| 00:50:C2:AE:9/36 | ClearCorpEnt | ClearCorp Enterprises, Inc |
| 00:05:82/24 | ClearCubeTec | ClearCube Technology |
| 00:0F:0A/24 | ClearEdgeNet | Clear Edge Networks |
| 70:B3:D5:1C:E/36 | ClearFlowbyA | Clear Flow by Antiference |
| 50:DE:19:1/28 | ClearFlowbyA | Clear Flow by Antiference |
| 20:0A:0D:3/28 | ClearlyIP | Clearly IP Inc |
| 70:B3:D5:9B:0/36 | ClearlyIP | Clearly IP Inc |
| 00:90:79/24 | ClearOne | ClearOne, Inc. |
| 00:24:EB/24 | ClearPathNet | ClearPath Networks, Inc. |
| 00:80:A9/24 | ClearpointRe | Clearpoint Research |
| 40:D8:55:00:9/36 | ClearSiteCom | ClearSite Communications Inc. |
| 3C:1A:0F/24 | ClearSkyData | ClearSky Data |
| 00:50:C2:50:D/36 | Clearsonics | Clearsonics Pty. Ltd. |
| 8C:5D:B2:7/28 | Cleartexsro | Cleartex s.r.o. |
| 00:50:C2:0E:5/36 | ClearwaterNe | Clearwater Networks |
| 00:1D:88/24 | Clearwire | Clearwire |
| 1C:21:D1:8/28 | CleavelandPr | Cleaveland/Price, Inc. |
| 00:50:C2:93:B/36 | CleavelandPr | Cleaveland/Price, Inc. |
| 70:B3:D5:56:5/36 | Clecell | Clecell |
| 00:0E:89/24 | Clematic | Clematic |
| 00:50:C2:37:6/36 | Cleode | Cleode |
| 8C:85:E6/24 | Cleondris | Cleondris GmbH |
| 70:B3:D5:A2:B/36 | CleverDevice | Clever Devices |
| 00:50:C2:06:5/36 | CleverDevice | Clever Devices |
| 2C:26:5F:3/28 | CleverElectr | shenzhen Clever Electronic Co., Ltd. |
| 08:DA:33:4/28 | CleverfoxEqu | Cleverfox Equipments Private Limited |
| C8:F1:0A:0/28 | CleverLogger | Clever Logger Technologies Pty Ltd |
| 00:50:C2:E0:2/36 | Cleverscope | Cleverscope |
| 00:90:F5/24 | Clevo | Clevo Co. |
| D4:93:90/24 | Clevo | Clevo Co. |
| 80:FA:5B/24 | Clevo | Clevo Co. |
| 18:C3:E4:6/28 | ClicksTechno | Clicks Technology Ltd |
| 00:02:23/24 | ClickTV | ClickTV |
| 00:90:A7/24 | Clientec | Clientec Corporation |
| 00:50:C2:2F:6/36 | CliffordChan | Clifford Chance LLP |
| 00:50:C2:BB:3/36 | ClimateWell | ClimateWell AB (publ) |
| 00:1D:94/24 | ClimaxTechno | Climax Technology Co., Ltd |
| 08:5B:DA/24 | CliniCare | CliniCare LTD |
| 00:40:A5/24 | ClinicompInt | Clinicomp Intl. |
| 70:B3:D5:AB:A/36 | CLInternatio | CL International |
| 78:D8:00:E/28 | CLInternatio | CL International |
| C4:A1:0E:B/28 | ClintonElect | Clinton Electronics Corporation |
| 6C:5C:3D:E/28 | ClintonElect | Clinton Electronics Corporation |
| 90:15:64:3/28 | ClintonElect | Clinton Electronics Corporation |
| 70:F8:E7:4/28 | CLIP | CLIP Inc. |
| 00:07:88/24 | Clipcomm | Clipcomm, Inc. |
| 00:17:DD/24 | ClipsalAustr | Clipsal Australia |
| D0:22:12:7/28 | CliptechIndu | Cliptech Industria e Comercio Ltda |
| FC:A4:7A:3/28 | CliptechIndu | Cliptech Industria e Comercio Ltda |
| 00:50:C2:00:7/36 | CliveGreen | Clive Green & Co. Ltd. |
| 00:15:DF/24 | Clivet | Clivet S.p.A. |
| 40:F3:85:C/28 | ClixxoBroadb | Clixxo Broadband Private Limited |
| C4:83:72:7/28 | clk2 | clk2.inc |
| 00:50:C2:49:0/36 | Cloanto | Cloanto Corporation |
| 8C:1F:64:4C:1/36 | ClockOMatic | Clock-O-Matic |
| 8C:1F:64:14:9/36 | ClockOMatic | Clock-O-Matic |
| 70:B3:D5:2F:0/36 | ClockOMatic | Clock-O-Matic |
| 70:B3:D5:5D:7/36 | ClockworkDog | Clockwork Dog |
| 8C:1F:64:C5:3/36 | ClockworkDog | Clockwork Dog |
| 00:50:C2:A0:6/36 | CloosElectro | Cloos Electronic Gmbh |
| 00:FA:3B/24 | CloosElectro | Cloos Electronic Gmbh |
| A0:22:4E:2/28 | ClosedJointS | Closed Joint-Stock Company "NORSI-TRANS" |
| 94:05:BB:7/28 | closip | closip Inc. |
| 00:80:84/24 | Cloud | The Cloud Inc. |
| 40:48:FD:7/28 | Cloud4Wi | Cloud4Wi |