MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixEC:A7:B1:40:00:00 /28
Vendor address999 Tianfu Fifth Street, High tech Zone Building 1, 6th floor Chengdu CN 610095
Country🇨🇳 China
RegisteredJul 31, 2024
Block rangeEC:A7:B1:40:00:00– EC:A7:B1:4F: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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EC:A7:B1:30:00:00 /28
Strongbyte Solutions Limited
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EC:A7:B1:50:00:00 /28
CHICONY POWER TECHNOLOGY (DONGGUAN) CO,. LTD.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Sichuan Ruiting Zhihui Technology Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #27,257 of 33,421 organizations by block count.