MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix50:19:11:90:00:00 /28
Vendor address15002 Northridge Dr, Suite 100 Chantilly VA US 20151
Country🇺🇸 United States
RegisteredJun 30, 2026
Block range50:19:11:90:00:00– 50:19:11:9F: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
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50:19:11:80:00:00 /28
ART LLC
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50:19:11:A0:00:00 /28
Shanghai Sigen New Energy Technology Co., Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Rugged Logic, Inc. holds 1 registered blocks in the IEEE registry, ranking #24,871 of 33,421 organizations by block count.