Huaxin SM Optics Co. LTD. (C0:83:59:20:00:00 /28)

Huaxin SM Optics 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.

PrefixC0:83:59:20:00:00 /28

Vendor address5F,B8,Tianfu software Park,Tianfu Road Chengdu Sichuan CN 610041

Block rangeC0:83:59:20:00:00– C0:83:59:2F: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

C0:83:59:20:00:00 C0:83:59:27:FF:FF C0:83:59:2F:FF:FF