macadress

Jiangsu Zhonganzhixin Communication Technology Co.

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.
Prefix58:20:8A:C0:00:00 /28
Vendor addressNo. 8 Dongwang Road,SIP Suzhou Jiangsu CN 215123
Country🇨🇳  China
RegisteredMar 11, 2023
Block range58:20:8A:C0:00:00– 58:20:8A:CF: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

58:20:8A:C0:00:00 58:20:8A:C7:FF:FF 58:20:8A:CF:FF:FF

Where this block sits

Previous 58:20:8A:B0:00:00 /28 Infodev Electronic Designers Intl. Next 58:20:8A:D0:00:00 /28 SAMBO HITECH

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

Jiangsu Zhonganzhixin Communication Technology Co. holds 1 registered blocks in the IEEE registry, ranking #17,158 of 33,427 organizations by block count.