MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix28:B7:7C:90:00:00 /28
Vendor address34F., No. 99, Sec. 1, XinTai 5th Rd., Xizhi Dist., New Taipei City TW 221
Country🇹🇼 Taiwan
RegisteredJun 20, 2020
Block range28:B7:7C:90:00:00– 28:B7:7C:9F: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
28:B7:7C:80:00:00 /28
Shenzhen PUAS Industrial Co.,LTD
Next
28:B7:7C:A0:00:00 /28
Simaudio Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Anser Coding Inc. holds 1 registered blocks in the IEEE registry, ranking #5,139 of 33,421 organizations by block count.