Vendor directory
17,375 blocks registered in United States.
Page 134 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
| Organization | Blocks |
|---|---|
| Apple, Inc. | 1,553 |
| Cisco Systems, Inc | 1,247 |
| IEEE Registration Authority | 436 |
| Texas Instruments | 392 |
| Commscope | 345 |
| Juniper Networks | 211 |
| Amazon Technologies Inc. | 204 |
| Dell Inc. | 184 |
| Hewlett Packard Enterprise | 176 |
| Silicon Laboratories | 154 |
Organization
Prefix
Type
🇺🇸 RackWare Inc.
F8:F0:14:00:00:00 /24
MA-L
🇺🇸 RACORE COMPUTER PRODUCTS INC.
00:00:58:00:00:00 /24
MA-L
🇺🇸 RADAR
BC:31:98:E0:00:00 /28
MA-M
🇺🇸 RADAR
70:B3:D5:CB:10:00 /36
MA-S
🇺🇸 RadarFind Corporation
00:19:A5:00:00:00 /24
MA-L
🇺🇸 RadChips, Inc.
00:24:4E:00:00:00 /24
MA-L
🇺🇸 Raden Inc
9C:9D:5D:00:00:00 /24
MA-L
🇺🇸 Radian Research, Inc.
70:B3:D5:9B:C0:00 /36
MA-S
🇺🇸 Radian Research, Inc.
8C:1F:64:1E:60:00 /36
MA-S
🇺🇸 Radiance Technologies, Inc.
00:13:AE:00:00:00 /24
MA-L
🇺🇸 Radiant Communications Corp.
00:01:75:00:00:00 /24
MA-L
🇺🇸 Radiant Imaging, Inc.
00:50:C2:5C:50:00 /36
IAB
🇺🇸 Radiant Industries Incorporated
D0:E8:28:00:00:00 /24
MA-L
🇺🇸 RADIANT SYSTEMS
00:E0:0D:00:00:00 /24
MA-L
🇺🇸 Radiant Vision Systems, LLC
24:F2:DD:00:00:00 /24
MA-L
🇺🇸 Radiation Safety and Control Services Inc
00:23:C5:00:00:00 /24
MA-L
🇺🇸 RADIC Technologies, Inc.
8C:1F:64:E9:10:00 /36
MA-S
🇺🇸 Radicom Research, Inc.
00:34:F1:00:00:00 /24
MA-L
🇺🇸 Radiient Technologies, Inc.
00:1D:BF:00:00:00 /24
MA-L
🇺🇸 Radinet Communications Inc.
8C:C7:AA:00:00:00 /24
MA-L
🇺🇸 Radio Bridge
78:94:E8:00:00:00 /24
MA-L
🇺🇸 Radio Datacom LLC
64:6E:6C:00:00:00 /24
MA-L
🇺🇸 Radio Mobile Access
30:AE:F6:00:00:00 /24
MA-L
🇺🇸 Radio Systems Design, Inc.
00:1E:2B:00:00:00 /24
MA-L
🇺🇸 RADIOLAN, INC.
00:A0:D4:00:00:00 /24
MA-L
🇺🇸 RadioMobile Inc
00:50:C2:E1:10:00 /36
IAB
🇺🇸 Radios, Inc.
4C:C6:02:00:00:00 /24
MA-L
🇺🇸 Radisys
50:45:94:00:00:00 /24
MA-L
🇺🇸 RADISYS CORPORATION
00:00:50:00:00:00 /24
MA-L
🇺🇸 Radisys Corporation
28:B9:D9:00:00:00 /24
MA-L
🇺🇸 Radius Gateway
90:F2:78:00:00:00 /24
MA-L
🇺🇸 Radix Corporation
00:50:C2:33:30:00 /36
IAB
🇺🇸 RADWIN Inc.
00:15:67:00:00:00 /24
MA-L
🇺🇸 RADYNE CORPORATION
00:10:65:00:00:00 /24
MA-L
🇺🇸 RADYNE CORPORATION
00:50:C2:F2:90:00 /36
IAB
🇺🇸 RAE Systems
00:12:9F:00:00:00 /24
MA-L
🇺🇸 Ragile Networks Inc.
74:90:1F:00:00:00 /24
MA-L
🇺🇸 Ragsdale Technology
A4:AD:00:00:00:00 /24
MA-L
🇺🇸 RAGULA SYSTEMS
00:20:52:00:00:00 /24
MA-L
🇺🇸 RAI Institute
A4:DB:4C:00:00:00 /24
MA-L
🇺🇸 RAID Incorporated
AC:37:C9:00:00:00 /24
MA-L
🇺🇸 RAID Incorporated
FA:F9:C0:00:00:00 /24
CID
🇺🇸 Rail Telematics Corp
8C:1F:64:7C:10:00 /36
MA-S
🇺🇸 RailComm, LLC
4C:E9:33:00:00:00 /24
MA-L
🇺🇸 Rain Bird Corporation
4C:A1:61:00:00:00 /24
MA-L
🇺🇸 Rajant Corporation
84:8D:84:00:00:00 /24
MA-L
🇺🇸 RAMIX INC.
00:30:F7:00:00:00 /24
MA-L
🇺🇸 RAMTEK CORP.
00:00:25:00:00:00 /24
MA-L
🇺🇸 Ranch Networks
00:50:C2:1E:90:00 /36
IAB
🇺🇸 Rancho Technology, Inc.
00:0C:A3:00:00:00 /24
MA-L
🇺🇸 Rand McNally
90:F4:C1:00:00:00 /24
MA-L
🇺🇸 Rane Corporation
00:11:FA:00:00:00 /24
MA-L
🇺🇸 Rangestar Wireless
00:05:54:00:00:00 /24
MA-L
🇺🇸 Ranovus USA
8A:A5:C1:00:00:00 /24
CID
🇺🇸 Rantic Labs, Inc.
00:B0:1E:00:00:00 /24
MA-L
🇺🇸 Rapid 5 Networks, Inc.
00:02:8E:00:00:00 /24
MA-L
🇺🇸 RAPID CITY COMMUNICATIONS
00:E0:16:00:00:00 /24
MA-L
🇺🇸 RapidWAN, Inc.
00:06:06:00:00:00 /24
MA-L
🇺🇸 RapidWave Inc.
00:50:C2:39:60:00 /36
IAB
🇺🇸 Rapiscan Systems
70:B3:D5:CC:90:00 /36
MA-S
🇺🇸 Raptor Engineering, LLC
2C:09:4D:00:00:00 /24
MA-L
🇺🇸 Raptor Networks Technology
00:0F:A7:00:00:00 /24
MA-L
🇺🇸 RAPTOR SYSTEMS
00:10:8F:00:00:00 /24
MA-L
🇺🇸 Raritan Computer, Inc
00:0D:5D:00:00:00 /24
MA-L
🇺🇸 Raspberry Pi Foundation
B8:27:EB:00:00:00 /24
MA-L
🇺🇸 RASTER GRAPHICS
00:40:21:00:00:00 /24
MA-L
🇺🇸 RASTER IMAGE PROCESSING SYSTEM
00:C0:38:00:00:00 /24
MA-L
🇺🇸 RASTER OPS CORPORATION
00:40:3E:00:00:00 /24
MA-L
🇺🇸 Rasvia Systems, Inc.
00:08:70:00:00:00 /24
MA-L
🇺🇸 RATIONAL
00:80:EF:00:00:00 /24
MA-L
🇺🇸 RAULAND-BORG CORPORATION
00:90:5E:00:00:00 /24
MA-L
🇺🇸 Raven Industries Inc.
50:A4:D0:40:00:00 /28
MA-M
🇺🇸 Raven Industries Inc.
00:50:C2:0F:90:00 /36
IAB
🇺🇸 Raven Resonance Inc.
B4:DF:43:C0:00:00 /28
MA-M
🇺🇸 Raven Systems Design, Inc
70:B3:D5:0B:00:00 /36
MA-S
🇺🇸 RAYCOM SYSTEMS INC
00:80:F2:00:00:00 /24
MA-L
🇺🇸 Raycon
80:77:86:10:00:00 /28
MA-M
🇺🇸 Raycon
8C:1F:64:A0:90:00 /36
MA-S
🇺🇸 RAYLAN CORPORATION
00:40:8B:00:00:00 /24
MA-L
🇺🇸 RAYNET CORPORATION
00:20:F3:00:00:00 /24
MA-L
🇺🇸 Raytheon
00:00:8F:00:00:00 /24
MA-L
🇺🇸 Raytheon BBN Technologies
44:51:DB:00:00:00 /24
MA-L
🇺🇸 RAYTHEON E-SYSTEMS, INC.
00:E0:E7:00:00:00 /24
MA-L
🇺🇸 Rayve Innovation Corp
F0:40:AF:C0:00:00 /28
MA-M
🇺🇸 Raza Microelectronics Inc
00:0F:30:00:00:00 /24
MA-L
🇺🇸 razberi technologies
24:60:81:00:00:00 /24
MA-L
🇺🇸 Razer Inc
44:5E:CD:00:00:00 /24
MA-L
🇺🇸 Razorstream, LLC
00:1C:9F:00:00:00 /24
MA-L
🇺🇸 RC Networks, Inc.
00:01:1F:00:00:00 /24
MA-L
🇺🇸 RC Systems
8C:1F:64:1E:90:00 /36
MA-S
🇺🇸 RC Systems Co. Inc.
00:50:C2:B6:70:00 /36
IAB
🇺🇸 RDC, Inc. dba LynTec
00:23:50:00:00:00 /24
MA-L
🇺🇸 RDI
00:09:96:00:00:00 /24
MA-L
🇺🇸 RE2 Inc
00:50:C2:F9:10:00 /36
IAB
🇺🇸 Reach Technology Inc.
30:68:8C:00:00:00 /24
MA-L
🇺🇸 ReadyLinks Inc
00:13:BA:00:00:00 /24
MA-L
🇺🇸 ReadyNet
00:01:9F:00:00:00 /24
MA-L
🇺🇸 Real Digital
8C:1F:64:3B:20:00 /36
MA-S
🇺🇸 Real Digital Media
00:0C:ED:00:00:00 /24
MA-L
🇺🇸 Real Random
8C:1F:64:4B:10:00 /36
MA-S