MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix2C:7A:F4:70:00:00 /28
Vendor addressli cheng qu shi ji da dao 11977 hao zhong xin jin xiu tian di dong yuan yi qu 21 hao lou 726 ji nan shi shandong CN 250031
Country🇨🇳 China
RegisteredMay 9, 2025
Block range2C:7A:F4:70:00:00– 2C:7A:F4:7F: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
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2C:7A:F4:60:00:00 /28
ShangYu Auto Technology Co.,Ltd
Next
2C:7A:F4:80:00:00 /28
Xi'an PESCO Electronic Technology Co., Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Jinan LinkCtrl IoT Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #17,190 of 33,427 organizations by block count.