MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:1C:C0:00 /36
Vendor addressVia O. Respighi 13 CATTOLICA RIMINI IT 47841
Country🇮🇹 Italy
RegisteredApr 15, 2026
Block range8C:1F:64:1C:C0:00– 8C:1F:64:1C:CF:FF
Address capacity4,096
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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
TEX COMPUTER SRL holds 14 registered blocks in the IEEE registry, ranking #227 of 33,421 organizations by block count.
Other blocks registered to TEX COMPUTER SRL
00:50:C2:EA:10:00 /36
IAB
70:B3:D5:10:80:00 /36
MA-S
70:B3:D5:1E:10:00 /36
MA-S
70:B3:D5:28:E0:00 /36
MA-S
70:B3:D5:39:00:00 /36
MA-S
70:B3:D5:5F:A0:00 /36
MA-S
70:B3:D5:6C:20:00 /36
MA-S
70:B3:D5:F9:90:00 /36
MA-S
8C:1F:64:24:90:00 /36
MA-S
8C:1F:64:2C:20:00 /36
MA-S
8C:1F:64:3B:60:00 /36
MA-S
8C:1F:64:D7:40:00 /36
MA-S