macadress

Shenzhen Siecom Communication Technology Development 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.
Prefix58:FC:DB:50:00:00 /28
Vendor addressWanwei building401 ,Industry 5th Road Shenzhen Guangdong CN 518067
Country🇨🇳  China
RegisteredOct 16, 2015
Block range58:FC:DB:50:00:00– 58:FC:DB:5F: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

58:FC:DB:50:00:00 58:FC:DB:57:FF:FF 58:FC:DB:5F:FF:FF

Where this block sits

Previous 58:FC:DB:40:00:00 /28 Inforce Computing Inc. Next 58:FC:DB:60:00:00 /28 Timex Group USA Inc

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

Shenzhen Siecom Communication Technology Development Co.,Ltd. holds 1 registered blocks in the IEEE registry, ranking #26,881 of 33,427 organizations by block count.