macadress

Vendor directory

17,375 blocks registered in United States.

Page 135 of 174

Every MA-L, MA-M, MA-S, IAB, and CID block IEEE has ever assigned to a named organization, browsable or searchable.

Unique organizations8,982
Total blocks17,375
MA-L count13,543
MA-M count976
MA-S count1,468
IAB count1,289
CID count99
Total address capacity229,909,483,520
Last changed hereSep 1, 2026

Country reflects the address published in the IEEE registration record. It does not indicate where a device was manufactured, sold, located or currently used.

Largest organizations in United States

OrganizationBlocks
Apple, Inc.1,553
Cisco Systems, Inc1,247
IEEE Registration Authority436
Texas Instruments392
Commscope345
Juniper Networks211
Amazon Technologies Inc.204
Dell Inc.184
Hewlett Packard Enterprise176
Silicon Laboratories154
Organization Prefix Type
🇺🇸 Real Time Access, Inc. 00:05:F8:00:00:00 /24 MA-L 🇺🇸 Real Time Automation 00:18:C7:00:00:00 /24 MA-L 🇺🇸 Real Time Logic 7C:38:6C:00:00:00 /24 MA-L 🇺🇸 Real Time Systems 00:50:C2:28:A0:00 /36 IAB 🇺🇸 RealD, Inc. 00:50:C2:4F:60:00 /36 IAB 🇺🇸 RealD, Inc. 00:50:C2:B5:80:00 /36 IAB 🇺🇸 RealD, Inc. 00:50:C2:C9:00:00 /36 IAB 🇺🇸 RealD, Inc. 70:B3:D5:CC:B0:00 /36 MA-S 🇺🇸 RealD, Inc. 8C:1F:64:0D:50:00 /36 MA-S 🇺🇸 RealD, Inc. 8C:1F:64:44:F0:00 /36 MA-S 🇺🇸 RealD, Inc. 8C:1F:64:B3:D0:00 /36 MA-S 🇺🇸 Really Simple Software, Inc E8:10:2E:00:00:00 /24 MA-L 🇺🇸 Realm Systems, Inc. 00:13:58:00:00:00 /24 MA-L 🇺🇸 RealNetworks C0:E9:11:00:00:00 /24 MA-L 🇺🇸 RealSense Inc. 58:76:07:50:00:00 /28 MA-M 🇺🇸 Realwave Inc. D0:14:11:70:00:00 /28 MA-M 🇺🇸 RealWear 04:EE:E8:50:00:00 /28 MA-M 🇺🇸 RealWear 8C:1F:64:03:50:00 /36 MA-S 🇺🇸 RealWear 8C:1F:64:9C:10:00 /36 MA-S 🇺🇸 ReaMetrix, Inc. 00:50:C2:A5:60:00 /36 IAB 🇺🇸 Rebel Systems 74:A2:35:90:00:00 /28 MA-M 🇺🇸 Rebel Systems 8C:1F:64:43:20:00 /36 MA-S 🇺🇸 Recall Technologies, Inc. 00:1E:9D:00:00:00 /24 MA-L 🇺🇸 ReCar LLC DBA Slate Auto 8C:1F:64:1F:F0:00 /36 MA-S 🇺🇸 Reciprocal Labs Corp F8:FE:5C:00:00:00 /24 MA-L 🇺🇸 Recogni Inc 34:AF:A3:00:00:00 /24 MA-L 🇺🇸 Recogni Inc 38:47:F2:00:00:00 /24 MA-L 🇺🇸 Recognition Systems LLC A4:3B:FA:60:00:00 /28 MA-M 🇺🇸 Recon Dynamics, LLC 00:50:C2:D1:C0:00 /36 IAB 🇺🇸 Red Beetle Inc. 00:24:1A:00:00:00 /24 MA-L 🇺🇸 RED Digital Cinema 2C:B6:9D:00:00:00 /24 MA-L 🇺🇸 RED Hydrogen LLC 54:A4:93:70:00:00 /28 MA-M 🇺🇸 Red Lion Controls Inc. 00:05:E4:00:00:00 /24 MA-L 🇺🇸 Red Lion Controls, LP 00:07:AF:00:00:00 /24 MA-L 🇺🇸 Red Lion Controls, LP 00:13:47:00:00:00 /24 MA-L 🇺🇸 Red Lion Controls, LP 00:60:DA:00:00:00 /24 MA-L 🇺🇸 Red Lion Controls, LP 00:A0:1D:00:00:00 /24 MA-L 🇺🇸 Red Point Positioning, Corp. E4:95:6E:A0:00:00 /28 MA-M 🇺🇸 Red Rock Networks 00:50:C2:32:30:00 /36 IAB 🇺🇸 Red Technologies, LLC. 88:5F:E8:70:00:00 /28 MA-M 🇺🇸 Redco Audio Inc 70:B3:D5:42:90:00 /36 MA-S 🇺🇸 REDCOM LABS INC. 00:A0:25:00:00:00 /24 MA-L 🇺🇸 REDCREEK COMMUNICATIONS, INC. 00:60:73:00:00:00 /24 MA-L 🇺🇸 Redfone Communications LLC 00:50:C2:65:D0:00 /36 IAB 🇺🇸 Redlake MASD LLC 00:E0:26:00:00:00 /24 MA-L 🇺🇸 Redpoint Controls 00:50:C2:1D:50:00 /36 IAB 🇺🇸 Redstone Systems, Inc. 64:62:66:40:00:00 /28 MA-M 🇺🇸 Redswitch Inc. 00:06:17:00:00:00 /24 MA-L 🇺🇸 Redwire, LLC EC:47:3C:00:00:00 /24 MA-L 🇺🇸 Redwire, LLC 00:50:C2:A8:C0:00 /36 IAB 🇺🇸 Redwood Systems 00:50:C2:AE:70:00 /36 IAB 🇺🇸 Redwood Systems 40:D8:55:0F:00:00 /36 IAB 🇺🇸 Redwood Systems 70:B3:D5:A2:A0:00 /36 MA-S 🇺🇸 Reference, LLC. 00:50:C2:A0:20:00 /36 IAB 🇺🇸 Refine Technology, LLC 70:B3:D5:EB:C0:00 /36 MA-S 🇺🇸 Reflexion Medical 70:B3:D5:29:80:00 /36 MA-S 🇺🇸 Refraction Technology, Inc. 00:01:89:00:00:00 /24 MA-L 🇺🇸 REGENT ELECTRONICS CORP. 00:D0:21:00:00:00 /24 MA-L 🇺🇸 Reichert Inc. 94:FB:A7:00:00:00 /28 MA-M 🇺🇸 Relax Technology, Inc. 00:04:DA:00:00:00 /24 MA-L 🇺🇸 Relay, Inc. 70:F6:CF:00:00:00 /24 MA-L 🇺🇸 Relay, Inc. 7A:F9:55:00:00:00 /24 CID 🇺🇸 Relay, Inc. 00:8D:F4:90:00:00 /28 MA-M 🇺🇸 Relay, Inc. 00:8D:F4:E0:00:00 /28 MA-M 🇺🇸 Relay2, Inc. B4:82:C5:00:00:00 /24 MA-L 🇺🇸 Relcom, Inc. 8C:1F:64:D9:C0:00 /36 MA-S 🇺🇸 RELIABLE POWER METERS 00:A0:A3:00:00:00 /24 MA-L 🇺🇸 Reliable Robotics Corporation 4A:67:04:00:00:00 /24 CID 🇺🇸 Reliable System Services Corp 00:50:C2:A7:00:00 /36 IAB 🇺🇸 Reliance Communications LLC 58:32:77:00:00:00 /24 MA-L 🇺🇸 RELIANCE COMPUTER CORP. 00:10:A8:00:00:00 /24 MA-L 🇺🇸 ReliOn Inc 40:D8:55:0C:B0:00 /36 IAB 🇺🇸 ReliOn Inc. 00:50:C2:1D:E0:00 /36 IAB 🇺🇸 Rembrandt Technologies, LLC d/b/a REMSTREAM 00:1C:C7:00:00:00 /24 MA-L 🇺🇸 Remec Broadband Wireless , LLC 80:C6:3F:00:00:00 /24 MA-L 🇺🇸 REMEC, Inc. 00:0E:DE:00:00:00 /24 MA-L 🇺🇸 Remote Security Systems, LLC 00:17:B4:00:00:00 /24 MA-L 🇺🇸 Remote Technologies Inc 00:15:26:00:00:00 /24 MA-L 🇺🇸 Remotec, Inc. 00:08:CC:00:00:00 /24 MA-L 🇺🇸 Renaissance Learning Inc 00:15:07:00:00:00 /24 MA-L 🇺🇸 Renaissance Networking, Inc. 00:50:C2:0D:10:00 /36 IAB 🇺🇸 Renasis, LLC 00:14:03:00:00:00 /24 MA-L 🇺🇸 Renesas Design US Inc. 90:FB:93:00:00:00 /24 MA-L 🇺🇸 Renesas Electronics 70:B3:D5:34:00:00 /36 MA-S 🇺🇸 Renesas Technology America, Inc. 00:30:55:00:00:00 /24 MA-L 🇺🇸 RENEX CORPORATION 00:A0:A8:00:00:00 /24 MA-L 🇺🇸 Renkus-Heinz, Inc. 00:1B:DE:00:00:00 /24 MA-L 🇺🇸 Reno A&E D0:75:BE:00:00:00 /24 MA-L 🇺🇸 Repp Health C8:2C:2B:20:00:00 /28 MA-M 🇺🇸 REPUBLIC TECHNOLOGY, INC. 00:80:A6:00:00:00 /24 MA-L 🇺🇸 Research Applications 00:50:C2:2D:E0:00 /36 IAB 🇺🇸 Research Applications Incorp 00:50:C2:90:10:00 /36 IAB 🇺🇸 Research Electronics International, LLC. 84:89:EC:10:00:00 /28 MA-M 🇺🇸 Research Products Corporation B4:82:55:00:00:00 /24 MA-L 🇺🇸 Residential Control Systems 00:50:C2:84:00:00 /36 IAB 🇺🇸 Resideo 00:D0:2D:00:00:00 /24 MA-L 🇺🇸 Resideo 10:30:89:00:00:00 /24 MA-L 🇺🇸 Resideo 48:A2:E6:00:00:00 /24 MA-L 🇺🇸 Resideo 5C:FC:E1:00:00:00 /24 MA-L 🇺🇸 Resideo 8A:CB:A4:00:00:00 /24 CID
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