MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:87:10:00 /36
Vendor addressul. Gaudiego 7 Gliwice Śląskie PL 44-100
Country🇵🇱 Poland
RegisteredApr 8, 2025
Block range8C:1F:64:87:10:00– 8C:1F:64:87:1F: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
8C:1F:64:87:00:00 /36
Chengdu Xiuwei TechnologyDevelopment Co., Ltd
Next
8C:1F:64:87:50:00 /36
EPC Power Corporation
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ENTE Sp. z o.o. holds 2 registered blocks in the IEEE registry, ranking #1,977 of 33,427 organizations by block count.
Other blocks registered to ENTE Sp. z o.o.