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
Country🇨🇳 China
RegisteredOct 25, 2019
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
Where this block sits
Previous
40:2C:76:60:00:00 /28
Guangzhou LANGO Electronics Technology Co., Ltd.
Next
40:2C:76:80:00:00 /28
Suteng Innovation Technology Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Zhejiang Guoli Security Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #33,203 of 33,421 organizations by block count.