MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:87:80:00 /36
Vendor addressUnit 1 Kensworthgate 200-204 High Street South Dunstable Bedfordshire GB LU6 3HS
Country🇬🇧 United Kingdom
RegisteredMay 19, 2021
Block range8C:1F:64:87:80:00– 8C:1F:64:87:8F: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
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8C:1F:64:87:60:00 /36
fmad engineering
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8C:1F:64:87:90:00 /36
ASHIDA Electronics Pvt. Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Green Access Ltd holds 2 registered blocks in the IEEE registry, ranking #2,114 of 33,421 organizations by block count.
Other blocks registered to Green Access Ltd