MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix20:46:F9:00:00:00 /24
Vendor address3820 Ventura Drive Arlington Heights IL US 60004
Country🇺🇸 United States
RegisteredNov 12, 2009
Block range20:46:F9:00:00:00– 20:46:F9: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
Advanced Network Devices (dba:AND) holds 1 registered blocks in the IEEE registry, ranking #4,216 of 33,427 organizations by block count.