RL Controls LLC.

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.

Prefix40:48:FD:30:00:00 /28

Vendor address2 G Gill St Woburn MA US 01801

RegisteredSep 11, 2017

Block range40:48:FD:30:00:00– 40:48:FD:3F: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

40:48:FD:30:00:00 40:48:FD:37:FF:FF 40:48:FD:3F:FF:FF

Where this block sits

Previous 40:48:FD:20:00:00 /28 MITHRAS Technology Co., LTD Next 40:48:FD:40:00:00 /28 Dynamic Engineering

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

RL Controls LLC. holds 1 registered blocks in the IEEE registry, ranking #24,672 of 33,427 organizations by block count.