Dolphin Concepts Limited

MA-M

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:FF:99:80:00:00 /28

Vendor addressA 10, Unit B-E 11/F, Genesis, 33-35 Wong Chuk Hang Road, Hong Kong HK 11111

RegisteredFeb 21, 2016

Block range50:FF:99:80:00:00– 50:FF:99:8F: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

50:FF:99:80:00:00 50:FF:99:87:FF:FF 50:FF:99:8F:FF:FF

Where this block sits

Previous 50:FF:99:70:00:00 /28 Honeywell International Next 50:FF:99:90:00:00 /28 Sea Eagle Optoelectronic Information Technology(Tianjin)co,Ltd

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Dolphin Concepts Limited holds 1 registered blocks in the IEEE registry, ranking #10,612 of 33,421 organizations by block count.