Zhejiang Guoli Security Technology Co., Ltd. (40:2C:76:70:00:00 /28)

Zhejiang Guoli Security 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.

Prefix40:2C:76:70:00:00 /28

Vendor addressRoom (1-1-178), No. 150, Zhangpu Road, Jiushigang Town, Haishu District Ningbo Zhejiang CN 315000

Block range40:2C:76:70:00:00– 40:2C:76:7F: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

40:2C:76:70:00:00 40:2C:76:77:FF:FF 40:2C:76:7F:FF:FF