MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixE0:23:3B:D0:00:00 /28
Vendor addressGad Feinstein 13 Rehovot IL 7638517
Country🇮🇱 Israel
RegisteredAug 14, 2025
Block rangeE0:23:3B:D0:00:00– E0:23:3B:DF: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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E0:23:3B:C0:00:00 /28
Chengdu ChengFeng Technology co,. Ltd.
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E0:23:3B:E0:00:00 /28
Ugreen Group Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Magosys Systems LTD holds 3 registered blocks in the IEEE registry, ranking #1,164 of 33,427 organizations by block count.
Other blocks registered to Magosys Systems LTD