MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix4C:6E:44:20:00:00 /28
Vendor address21 Commerce Dr Danbury CT US 06810
Country🇺🇸 United States
RegisteredApr 16, 2026
Block range4C:6E:44:20:00:00– 4C:6E:44:2F: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
4C:6E:44:10:00:00 /28
Shenzhen Xmitech Electronic Co.,Ltd
Next
4C:6E:44:30:00:00 /28
Qingting Intelligent Technology（Suzhou）Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Accutrol LLC holds 1 registered blocks in the IEEE registry, ranking #3,878 of 33,421 organizations by block count.