macadress

Jasco Products Company

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.
Prefix28:FD:80:80:00:00 /28
Vendor address10 East Memorial Road Oklahoma City Oklahoma US 73114
Country🇺🇸  United States
RegisteredOct 16, 2015
Block range28:FD:80:80:00:00– 28:FD:80:8F: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

28:FD:80:80:00:00 28:FD:80:87:FF:FF 28:FD:80:8F:FF:FF

Where this block sits

Previous 28:FD:80:70:00:00 /28 University of York Next 28:FD:80:90:00:00 /28 JINLITONG INTERNATIONAL CO.,LTD

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

Jasco Products Company holds 1 registered blocks in the IEEE registry, ranking #17,023 of 33,427 organizations by block count.