MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:6D:10:00 /36
Vendor addressThe Barns, Kemps Farm Colchester Essex GB CO3 8NB
Country🇬🇧 United Kingdom
RegisteredFeb 22, 2015
Block range70:B3:D5:6D:10:00– 70:B3:D5:6D: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
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70:B3:D5:6D:00:00 /36
Code Blue Corporation
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70:B3:D5:6D:20:00 /36
Ahrens & Birner Company GmbH
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Visual Engineering Technologies Ltd holds 1 registered blocks in the IEEE registry, ranking #31,621 of 33,421 organizations by block count.