MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix04:A1:6F:10:00:00 /28
Vendor address20 Mural St, Unit 7 Richmond Hill Ontario CA L4B1K3
Country🇨🇦 Canada
RegisteredFeb 11, 2025
Block range04:A1:6F:10:00:00– 04:A1:6F:1F: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
04:A1:6F:00:00:00 /28
Shanghai Kanghai Information System CO.,LTD.
Next
04:A1:6F:20:00:00 /28
Suzhou Lianshichuangzhi Technology Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
iENSO Inc. holds 2 registered blocks in the IEEE registry, ranking #2,236 of 33,421 organizations by block count.
Other blocks registered to iENSO Inc.