MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixC0:81:70:00:00:00 /24
Vendor address4101, rue Molson Montreal Quebec CA H1Y3L1
Country🇨🇦 Canada
RegisteredMar 30, 2012
Block rangeC0:81:70:00:00:00– C0:81:70: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
Effigis GeoSolutions holds 1 registered blocks in the IEEE registry, ranking #11,275 of 33,427 organizations by block count.