MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix1C:A0:EF:10:00:00 /28
Vendor address102/111-112 Mooban Sinpattanatanee,, Tessabansongkroh Road., Ladyao, Jatujak, Jatujak Bangkok Metropolis TH 10900
Country🇹🇠Thailand
RegisteredFeb 9, 2021
Block range1C:A0:EF:10:00:00– 1C:A0:EF: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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1C:A0:EF:00:00:00 /28
Tangshan Liulin Automation Equipment Co., Ltd.
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1C:A0:EF:20:00:00 /28
Schneider-Electric(China)Co.Ltd,Shenzhen Branch
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Wisnu and Supak Co.,Ltd. holds 2 registered blocks in the IEEE registry, ranking #3,428 of 33,421 organizations by block count.
Other blocks registered to Wisnu and Supak Co.,Ltd.