MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixB0:B3:53:10:00:00 /28
Vendor address5D F1.6 Block,Tianfa Building,Tianan Chegongmiao Industrial park,Futian Dist shenzhen guangdong CN 518000
Country🇨🇳 China
RegisteredNov 23, 2019
Block rangeB0:B3:53:10:00:00– B0:B3:53:1F: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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B0:B3:53:00:00:00 /28
Blake UK
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B0:B3:53:20:00:00 /28
Rizhao SUNWAM International Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Sprocomm Technologies CO.,LTD. holds 3 registered blocks in the IEEE registry, ranking #1,325 of 33,421 organizations by block count.
Other blocks registered to Sprocomm Technologies CO.,LTD.