MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix4C:91:7A:10:00:00 /28
Vendor addressAvda. Rita Levi Montalcini, 2 Parcela 5, Tecnogetafe - Getafe Madrid ES 28906
Country🇪🇸 Spain
RegisteredJul 1, 2019
Block range4C:91:7A:10:00:00– 4C:91:7A: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.
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Example addresses in this block
Where this block sits
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4C:91:7A:00:00:00 /28
Shenzhen Dangs Science & Technology CO.,LTD
Next
4C:91:7A:20:00:00 /28
Chongqing Unisinsight Technology Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Inster Tecnología y Comunicaciones SAU holds 1 registered blocks in the IEEE registry, ranking #16,235 of 33,421 organizations by block count.