Hebei Far-East Communication System Engineerning Co.,Ltd. (C4:A5:59:A0:00:00 /28)

Hebei Far-East Communication System Engineerning Co.,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.

PrefixC4:A5:59:A0:00:00 /28

Vendor addressNO.21, Changsheng Street, Luquan Economic Development Zone Shijiazhuang Hebei Prov CN 050000

Block rangeC4:A5:59:A0:00:00– C4:A5:59:AF: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

C4:A5:59:A0:00:00 C4:A5:59:A7:FF:FF C4:A5:59:AF:FF:FF