macadress

YMC AG

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1B:05:00:00:00 /24
Vendor addressSonnenstrasse 4 Kreuzlingen Thurgau CH 8280
Country🇨🇭  Switzerland
RegisteredJan 11, 2007
Block range00:1B:05:00:00:00– 00:1B:05: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 11, 2007 – Sep 2, 2009 Young Media Concepts GmbH name changed
  2. Sep 2, 2009 – present YMC AG

Example addresses in this block

00:1B:05:00:00:00 00:1B:05:7F:FF:FF 00:1B:05:FF:FF:FF

Where this block sits

Previous 00:1B:04:00:00:00 /24 Affinity International S.p.a Next 00:1B:06:00:00:00 /24 Ateliers R. LAUMONIER

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

YMC AG holds 1 registered blocks in the IEEE registry, ranking #32,952 of 33,427 organizations by block count.