chengdu joyotime Technology 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.

Prefix0C:EF:AF:A0:00:00 /28

Vendor addressroom 503, B7 , tianfu software park chengdu sichuan CN 610000

RegisteredOct 16, 2015

Block range0C:EF:AF:A0:00:00– 0C:EF:AF: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

0C:EF:AF:A0:00:00 0C:EF:AF:A7:FF:FF 0C:EF:AF:AF:FF:FF

Where this block sits

Previous 0C:EF:AF:90:00:00 /28 Rotel Next 0C:EF:AF:B0:00:00 /28 Hubei Century Network Technology Co., Ltd

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

chengdu joyotime Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #8,257 of 33,427 organizations by block count.