MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD0:D9:4F:20:00:00 /28
Vendor address2F., No. 1568-1, Chung Shan Road, Sec. 1, Kuang-In Taoyuan TW 328
Country🇹🇼 Taiwan
RegisteredApr 3, 2016
Block rangeD0:D9:4F:20:00:00– D0:D9:4F: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
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D0:D9:4F:10:00:00 /28
mycable GmbH
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D0:D9:4F:30:00:00 /28
Beijing Yiwangxuntong Technology
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Teco Image Systems Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #29,438 of 33,427 organizations by block count.