Philips Medical Systems - Cardiac and Monitoring Systems (CM

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix00:09:5C:00:00:00 /24

Vendor address3000 Minuteman Road Andover Massachusetts US 01810

RegisteredMar 29, 2002

Block range00:09:5C:00:00:00– 00:09:5C:FF:FF:FF

Address capacity16,777,216

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 →

Ownership timeline

Mar 29, 2002 – Feb 12, 2004 Private name changedaddress changedcountry changed
Feb 12, 2004 – present Philips Medical Systems - Cardiac and Monitoring Systems (CM

Example addresses in this block

00:09:5C:00:00:00 00:09:5C:7F:FF:FF 00:09:5C:FF:FF:FF

Where this block sits

Previous 00:09:5B:00:00:00 /24 NETGEAR Next 00:09:5D:00:00:00 /24 Dialogue Technology Corp.

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

Philips Medical Systems - Cardiac and Monitoring Systems (CM holds 1 registered blocks in the IEEE registry, ranking #22,908 of 33,427 organizations by block count.