macadress

AVSystem sp. z o. o.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:23:C7:00:00:00 /24
Vendor addressRadzikowskiego 47D Kraków, ul. PL 31-315
Country🇵🇱  Poland
RegisteredOct 8, 2008
Block range00:23:C7:00:00:00– 00:23:C7: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. Oct 8, 2008 – Nov 6, 2022 AVSystem name changedaddress changed
  2. Nov 6, 2022 – present AVSystem sp. z o. o.

Example addresses in this block

00:23:C7:00:00:00 00:23:C7:7F:FF:FF 00:23:C7:FF:FF:FF

Where this block sits

Previous 00:23:C6:00:00:00 /24 SMC Corporation Next 00:23:C8:00:00:00 /24 TEAM-R

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

AVSystem sp. z o. o. holds 1 registered blocks in the IEEE registry, ranking #6,101 of 33,421 organizations by block count.