MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixB8:4C:87:40:00:00 /28
Vendor addressKaufstraße 14 Gruenkraut DE 88287
Country🇩🇪 Germany
RegisteredJul 11, 2023
Block rangeB8:4C:87:40:00:00– B8:4C:87:4F:FF:FF
Address capacity1,048,576
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
B8:4C:87:30:00:00 /28
Shenzhen Link-all Technology Co., Ltd
Next
B8:4C:87:50:00:00 /28
Psync Labs, Inc.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Blum Novotest GmbH holds 1 registered blocks in the IEEE registry, ranking #7,184 of 33,427 organizations by block count.