MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:86:40:00 /36
Vendor addressIMI CRITICAL ENGINEERING 17 BALENA CLOSE Poole Dorset GB BH17 7EF
Country🇬🇧 United Kingdom
RegisteredAug 8, 2024
Block range8C:1F:64:86:40:00– 8C:1F:64:86:4F: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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
IMI Thomson Valves holds 1 registered blocks in the IEEE registry, ranking #15,780 of 33,427 organizations by block count.