MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1C:1C:00:00:00 /24
Vendor addressIgnaz-Koeck-Strasse 19 Vienna AT A-1210
Country🇦🇹 Austria
RegisteredApr 8, 2007
Block range00:1C:1C:00:00:00– 00:1C:1C: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 →
Example addresses in this block
Where this block sits
Previous
00:1C:1B:00:00:00 /24
Hyperstone GmbH
Next
00:1C:1D:00:00:00 /24
CHENZHOU GOSPELL DIGITAL TECHNOLOGY CO.,LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Center Communication Systems GmbH holds 1 registered blocks in the IEEE registry, ranking #8,037 of 33,421 organizations by block count.