MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix34:B5:F3:80:00:00 /28
Vendor addressRoom 514 The 5th Floor, No.175 Weizhan Road China (Shanghai) Plilot Free Trade Zone Shanghai CN 201306
Country🇨🇳 China
RegisteredJul 17, 2025
Block range34:B5:F3:80:00:00– 34:B5:F3:8F: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
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34:B5:F3:70:00:00 /28
Hyatta Digital Technology Co., Ltd.
Next
34:B5:F3:90:00:00 /28
Shenzhen PeakVic Technology Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shanghai Sigen New Energy Technology Co., Ltd holds 4 registered blocks in the IEEE registry, ranking #822 of 33,421 organizations by block count.
Other blocks registered to Shanghai Sigen New Energy Technology Co., Ltd