macadress

AUMOVIO Czech Republic s.r.o.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixAC:C3:58:00:00:00 /24
Vendor addressPrůmyslová 1851 Brandýs nad Labem CZ 250 01
Country🇨🇿  Czechia
RegisteredApr 27, 2019
Block rangeAC:C3:58:00:00:00– AC:C3:58: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 27, 2019 – Dec 13, 2025 Continental Automotive Czech Republic s.r.o. name changed
  2. Dec 13, 2025 – present AUMOVIO Czech Republic s.r.o.

Example addresses in this block

AC:C3:58:00:00:00 AC:C3:58:7F:FF:FF AC:C3:58:FF:FF:FF

Where this block sits

AUMOVIO Czech Republic s.r.o. holds 2 registered blocks in the IEEE registry, ranking #1,558 of 33,421 organizations by block count.

Other blocks registered to AUMOVIO Czech Republic s.r.o.

9C:28:BF:00:00:00 /24 MA-L