macadress

RFM

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:30:66:00:00:00 /24
Vendor address3079 Premiere Pkwy Duluth GA US 30097
Country🇺🇸  United States
RegisteredSep 8, 2000
Block range00:30:66:00:00:00– 00:30:66:FF:FF:FF
Address capacity16,777,216
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Ownership timeline

  1. Sep 8, 2000 – Dec 31, 2007 DIGITAL WIRELESS CORPORATION name changedaddress changed
  2. Dec 31, 2007 – Jan 29, 2010 Cirronet, Inc. name changed
  3. Jan 29, 2010 – present RFM

Example addresses in this block

00:30:66:00:00:00 00:30:66:7F:FF:FF 00:30:66:FF:FF:FF

Where this block sits

Previous 00:30:65:00:00:00 /24 Apple, Inc. Next 00:30:67:00:00:00 /24 BIOSTAR Microtech Int'l Corp.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

RFM holds 1 registered blocks in the IEEE registry, ranking #24,543 of 33,421 organizations by block count.