GC AUTOMATION 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.

PrefixC4:7C:8D:B0:00:00 /28

Vendor addressSECOND FLOOR,BLD 10,GRAIN INDUSTRIAL PARK,NO.299 GUANPING ROAD,GUANLAN NEW DISTRICT,SHENZHEN CITY,CHINA Shenzhen CN 518000

Country🇨🇳 China

RegisteredMar 6, 2016

Block rangeC4:7C:8D:B0:00:00– C4:7C:8D:BF: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

C4:7C:8D:B0:00:00 C4:7C:8D:B7:FF:FF C4:7C:8D:BF:FF:FF

Where this block sits

Previous C4:7C:8D:A0:00:00 /28 Silvus technologies inc Next C4:7C:8D:C0:00:00 /28 INOTEC Sicherheitstechnik GmbH

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

GC AUTOMATION CO,LTD holds 1 registered blocks in the IEEE registry, ranking #13,379 of 33,427 organizations by block count.