MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:15:42:00:00:00 /24
Vendor addressVia Primo Maggio 36 San Vittore Olona Milano IT 20028
Country🇮🇹 Italy
RegisteredJul 21, 2005
Block range00:15:42:00:00:00– 00:15:42:FF:FF:FF
Address capacity16,777,216
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
Previous
00:15:41:00:00:00 /24
StrataLight Communications, Inc.
Next
00:15:43:00:00:00 /24
Aberdeen Test Center
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
MICROHARD S.R.L. holds 1 registered blocks in the IEEE registry, ranking #19,816 of 33,421 organizations by block count.