Inster Tecnología y Comunicaciones SAU
MA-M
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
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.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block