macadress

Azul Systems, Inc.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:0F:51:00:00:00 /24
Vendor address1600 Plymouth Street Mountain View California US 94043
Country🇺🇸  United States
RegisteredJan 23, 2004
Block range00:0F:51:00:00:00– 00:0F:51: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. Jan 23, 2004 – Mar 17, 2005 Private name changedaddress changedcountry changed
  2. Mar 17, 2005 – present Azul Systems, Inc.

Example addresses in this block

00:0F:51:00:00:00 00:0F:51:7F:FF:FF 00:0F:51:FF:FF:FF

Where this block sits

Previous 00:0F:50:00:00:00 /24 StreamScale Limited Next 00:0F:52:00:00:00 /24 YORK Refrigeration, Marine & Controls

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

Azul Systems, Inc. holds 1 registered blocks in the IEEE registry, ranking #6,209 of 33,427 organizations by block count.