MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixAC:1D:DF:B0:00:00 /28
Vendor addressRm 2208, U-Tower, 120 HeungDeok JungAng-ro, GiHeung-Gu YongIn-si Gyeonggi-do KR 16950
Country🇰🇷 South Korea
RegisteredJul 16, 2017
Block rangeAC:1D:DF:B0:00:00– AC:1D:DF:BF: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 →
Ownership timeline
- Jul 16, 2017 – Apr 17, 2020 Fine Inc. name changed
- Apr 17, 2020 – present FINEpowerX INC
Example addresses in this block
Where this block sits
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AC:1D:DF:A0:00:00 /28
WESCO INTEGRATED SUPPLY
Next
AC:1D:DF:C0:00:00 /28
Beijing Chunhong Technology Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
FINEpowerX INC holds 1 registered blocks in the IEEE registry, ranking #12,696 of 33,427 organizations by block count.