MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix50:19:11:20:00:00 /28
Vendor address11-32, Sangdeok-ro, Jiksan-eup, Seobuk-gu, Cheonan-si, Chungcheongnam-do, Republic of Korea Cheonan-si Chungcheongnam-do KR 31029
Country🇰🇷 South Korea
RegisteredJun 29, 2026
Block range50:19:11:20:00:00– 50:19:11:2F: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.
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Example addresses in this block
Where this block sits
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50:19:11:10:00:00 /28
Shenzhen Chino-E Communication Co,Ltd
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50:19:11:30:00:00 /28
Ingersoll-Rand
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
HBTECH holds 1 registered blocks in the IEEE registry, ranking #14,624 of 33,421 organizations by block count.