MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix38:73:EA:20:00:00 /28
Vendor addressRoom 820, C/F, Building 1, NO. 3000 Longdong Avenue, China(Shanghai) Pilot Free Trade ShangHai ShangHai CN 201203
Country🇨🇳 China
RegisteredAug 24, 2017
Block range38:73:EA:20:00:00– 38:73:EA:2F: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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38:73:EA:10:00:00 /28
KingWay Information Co.,Ltd.
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38:73:EA:30:00:00 /28
Proch plastic Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Eyesight(Shanghai)Communication Technology Co.,Ltd. holds 1 registered blocks in the IEEE registry, ranking #12,420 of 33,427 organizations by block count.