58,507 registered blocks.

🇨🇳 Optictimes Co.,Ltd C8:63:14:A0:00:00 /28 MA-M 🇮🇳 Optiemus Electronics Limited A0:E9:22:00:00:00 /24 MA-L 🇮🇳 Optiemus Electronics Limited 8C:1F:64:CA:80:00 /36 MA-S 🇨🇦 Optigo Networks D0:D9:4F:50:00:00 /28 MA-M 🇬🇧 Optikinetics Ltd 34:D7:F5:90:00:00 /28 MA-M 🇮🇳 optilink networks pvt ltd B4:F9:49:00:00:00 /24 MA-L 🇮🇳 optilink networks pvt ltd 7C:CB:E2:D0:00:00 /28 MA-M 🇸🇪 Optillion 00:06:F1:00:00:00 /24 MA-L 🇳🇱 OptiLogix BV CC:BE:71:00:00:00 /24 MA-L 🇯🇵 OPTiM Corporation D4:7C:44:B0:00:00 /28 MA-M 🇺🇸 OPTIM SYSTEMS, INC. 00:90:C6:00:00:00 /24 MA-L 🇨🇦 OPTIMA TELE.COM, INC. 00:D0:FD:00:00:00 /24 MA-L 🇬🇧 Optimal Audio Ltd 4C:FB:F4:00:00:00 /24 MA-L 🇧🇸 Optimal Technologies International Inc. 00:18:FD:00:00:00 /24 MA-L 🇺🇸 OPTIMATION, INC. 00:50:8E:00:00:00 /24 MA-L 🇩🇪 optiMEAS GmbH 00:1B:C5:05:80:00 /36 MA-S 🇺🇸 Optimedical Systems 00:1C:E3:00:00:00 /24 MA-L 🇺🇸 OPTIMEM 00:40:EE:00:00:00 /24 MA-L 🇺🇸 OptiMight Communications, Inc. 00:03:9C:00:00:00 /24 MA-L 🇨🇦 Optimum Instruments Inc. 8C:1F:64:A9:E0:00 /36 MA-S 🇵🇱 OPTIMUS IC S.A. 00:12:FD:00:00:00 /24 MA-L 🇺🇸 Optinel Systems, Inc. 00:0F:FA:00:00:00 /24 MA-L 🇧🇪 Option International N.V. 00:0C:E3:00:00:00 /24 MA-L 🇸🇪 Option Wireless Sweden 00:09:8C:00:00:00 /24 MA-L 🇬🇧 Optionexist Limited 00:50:C2:05:40:00 /36 IAB 🇺🇸 OPTIQUEST 00:A0:E4:00:00:00 /24 MA-L 🇺🇸 OptiScan Biomedical Corp. 70:B3:D5:08:80:00 /36 MA-S 🇺🇸 OptiSense Network, LLC 28:41:21:00:00:00 /24 MA-L 🇮🇳 OPTITERA GLOBAL NETWORKS PRIVATE LIMITED D0:16:F0:A0:00:00 /28 MA-M 🇺🇸 Optium Corporation 00:0E:52:00:00:00 /24 MA-L 🇦🇺 Optiver Pty Ltd 70:B3:D5:B7:10:00 /36 MA-S 🇳🇱 Optiver Services B.V. 5C:6A:EC:80:00:00 /28 MA-M 🇺🇸 Optiview USA D8:5C:11:00:00:00 /24 MA-L 🇺🇸 OPTIVISION, INC. 00:90:AC:00:00:00 /24 MA-L 🇧🇬 OPTIX JSC 70:B3:D5:E7:70:00 /36 MA-S 🇮🇹 Opto Engineering 88:5F:E8:20:00:00 /28 MA-M 🇺🇸 OPTO-22 00:A0:3D:00:00:00 /24 MA-L 🇯🇵 OPTOELECTRONICS Co., Ltd. 00:12:6A:00:00:00 /24 MA-L 🇮🇹 Optoelettronica Italia S.r.l. 00:50:C2:87:F0:00 /36 IAB 🇨🇿 OPTOKON, a.s. 28:69:26:00:00:00 /24 MA-L 🇨🇿 OPTOKON, a.s. 8C:1F:64:BC:A0:00 /36 MA-S 🇧🇷 OptoLink Industria e Comercio Ltda 00:50:C2:D8:A0:00 /36 IAB 🇩🇪 OptoMET GmbH E4:2F:56:00:00:00 /24 MA-L 🇰🇷 Optomind Inc. 54:FB:5A:00:00:00 /24 MA-L 🇩🇪 Optonic GmbH 78:52:4A:00:00:00 /24 MA-L 🇳🇴 Optoplan as 00:50:C2:6B:F0:00 /36 IAB 🇩🇪 OptoPrecision GmbH 70:B3:D5:4F:90:00 /36 MA-S 🇬🇧 Optos Plc 00:21:24:00:00:00 /24 MA-L 🇨🇭 Optotune Switzerland AG 8C:1F:64:65:60:00 /36 MA-S 🇹🇼 Optoway Technology Incorporation 00:0E:FA:00:00:00 /24 MA-L 🇰🇷 Optowiz Co., Ltd 74:0E:DB:00:00:00 /24 MA-L 🇯🇵 OPTOWL Co.,Ltd 54:A1:04:00:00:00 /24 MA-L 🇺🇸 Optranet, Inc. 00:03:1E:00:00:00 /24 MA-L 🇩🇪 Optris GmbH 9C:43:1E:70:00:00 /28 MA-M 🇨🇭 Optronic AG 00:30:BC:00:00:00 /24 MA-L 🇸🇪 Optronic Partner pr AB 00:50:C2:36:A0:00 /36 IAB 🇺🇸 OPTRONICS 00:50:A6:00:00:00 /24 MA-L 🇫🇷 OPTSYS 70:B3:D5:58:C0:00 /36 MA-S 🇰🇷 OPTSYS TECHNOLOGY CO., LTD. 00:1C:13:00:00:00 /24 MA-L 🇺🇸 OptXCon, Inc. 00:04:BE:00:00:00 /24 MA-L 🇨🇳 Opulinks 88:4A:18:00:00:00 /24 MA-L 🇹🇼 OPUS High Technology Corporation F0:24:05:00:00:00 /24 MA-L 🇺🇸 OPUS SYSTEMS 00:80:F1:00:00:00 /24 MA-L 🇺🇸 Opus Telecom Inc. 00:50:C2:00:D0:00 /36 IAB 🇺🇸 Opus-Two ICS 8C:1F:64:1D:30:00 /36 MA-S 🇺🇸 OpVista 00:50:C2:29:60:00 /36 IAB 🇺🇸 OpVista, Inc. 00:1A:06:00:00:00 /24 MA-L 🇺🇸 OPW Fuel Management Systems 00:18:C6:00:00:00 /24 MA-L 🇨🇳 OPWILL Technologies CO .,LTD 68:DB:96:00:00:00 /24 MA-L 🇨🇳 Opzoon Technology Co.,Ltd. 24:B8:D2:00:00:00 /24 MA-L 🇺🇸 OQO, Inc. 00:0C:96:00:00:00 /24 MA-L 🇨🇳 ORA Inc. 80:02:DF:00:00:00 /24 MA-L 🇺🇸 Oracle 00:00:17:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:00:7D:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:01:5D:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:03:BA:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:07:82:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:0F:4B:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:10:4F:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:10:E0:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:13:97:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:14:4F:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:20:F2:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:21:28:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:21:F6:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 00:A0:A4:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation 08:00:20:00:00:00 /24 MA-L 🇮🇱 Oracle Corporation 2C:C2:60:00:00:00 /24 MA-L 🇺🇸 Oracle Corporation A8:69:8C:00:00:00 /24 MA-L 🇰🇷 ORACOM Co, Ltd. 00:0C:1B:00:00:00 /24 MA-L 🇭🇰 Oraimo Technology Limited 2C:A3:27:00:00:00 /24 MA-L 🇭🇰 Oraimo Technology Limited 5C:BE:69:00:00:00 /24 MA-L 🇭🇰 Oraimo Technology Limited 5C:E8:B7:00:00:00 /24 MA-L 🇫🇷 Orange 7A:AB:77:00:00:00 /24 CID 🇰🇷 Orange Logic 00:1F:2B:00:00:00 /24 MA-L 🇺🇸 ORANGE MICRO, INC. 00:D0:F5:00:00:00 /24 MA-L 🇵🇱 ORANGE POLSKA 8C:F8:13:00:00:00 /24 MA-L 🇺🇸 Orange Precision Measurement LLC 8C:1F:64:7E:E0:00 /36 MA-S 🇬🇧 Orange Tree Technologies 00:50:C2:A7:B0:00 /36 IAB 🇬🇧 Orange Tree Technologies Ltd 70:B3:D5:EF:40:00 /36 MA-S