macadress

3CX

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:60:3D:00:00:00 /24
Vendor address2085 HAMILTON AVE., -STE.#220 SAN JOSE CA US 95125
Country🇺🇸  United States
RegisteredApr 22, 1998
Block range00:60:3D:00:00:00– 00:60:3D: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. Apr 22, 1998 – Sep 8, 2000 INTEGRATED MICRO SOLUTIONS,INC name changedaddress changed
  2. Sep 8, 2000 – present 3CX

Example addresses in this block

00:60:3D:00:00:00 00:60:3D:7F:FF:FF 00:60:3D:FF:FF:FF

Where this block sits

Previous 00:60:3C:00:00:00 /24 HAGIWARA SYS-COM CO., LTD. Next 00:60:3E:00:00:00 /24 Cisco Systems, Inc

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

3CX holds 1 registered blocks in the IEEE registry, ranking #3,552 of 33,421 organizations by block count.