The Professional Monitor Company Ltd

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.

PrefixC0:9B:F4:D0:00:00 /28

Vendor addressHolme Court A1 Biggleswade Bedfordshire GB SG189ST

RegisteredFeb 13, 2020

Block rangeC0:9B:F4:D0:00:00– C0:9B:F4:DF: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

C0:9B:F4:D0:00:00 C0:9B:F4:D7:FF:FF C0:9B:F4:DF:FF:FF

Where this block sits

Previous C0:9B:F4:C0:00:00 /28 Pinpark Inc. Next C0:9B:F4:E0:00:00 /28 AUMOVIO Components Malaysia Sdn.Bhd.

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

The Professional Monitor Company Ltd holds 1 registered blocks in the IEEE registry, ranking #29,919 of 33,427 organizations by block count.