macadress

Leonardo SpA - Montevarchi

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.
Prefix78:13:05:A0:00:00 /28
Vendor addressvia DELLA LAMA, 13 Montevarchi AREZZO IT 52025
Country🇮🇹  Italy
RegisteredApr 23, 2021
Block range78:13:05:A0:00:00– 78:13:05:AF: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

78:13:05:A0:00:00 78:13:05:A7:FF:FF 78:13:05:AF:FF:FF

Where this block sits

Previous 78:13:05:90:00:00 /28 Shanghai Kanghai Information System CO.,LTD. Next 78:13:05:B0:00:00 /28 Bithouse Oy

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Leonardo SpA - Montevarchi holds 1 registered blocks in the IEEE registry, ranking #18,377 of 33,421 organizations by block count.