MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix00:1B:C5:0B:20:00 /36
Vendor addressTylova 1/57 Plzen CZ 301 28
Country🇨🇿 Czechia
RegisteredAug 18, 2013
Block range00:1B:C5:0B:20:00– 00:1B:C5:0B:2F:FF
Address capacity4,096
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
00:1B:C5:0B:10:00 /36
Roslen Eco-Networking Products
Next
00:1B:C5:0B:30:00 /36
FSM Solutions Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
SKODA ELECTRIC a.s. holds 2 registered blocks in the IEEE registry, ranking #3,085 of 33,427 organizations by block count.
Other blocks registered to SKODA ELECTRIC a.s.