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:87:50:00:00 /28
Vendor address1825 Allison Way San Jose CA US 95132
Country🇺🇸 United States
RegisteredJul 11, 2023
Block rangeB8:4C:87:50:00:00– B8:4C:87:5F: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
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B8:4C:87:40:00:00 /28
Blum Novotest GmbH
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B8:4C:87:60:00:00 /28
HORIBA Precision Instruments (Beijing) Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Psync Labs, Inc. holds 1 registered blocks in the IEEE registry, ranking #23,678 of 33,427 organizations by block count.