MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1F:FF:00:00:00 /24
Vendor address1740 Golden Mile Highway Monroeville PA US 15146
Country🇺🇸 United States
RegisteredApr 14, 2008
Block range00:1F:FF:00:00:00– 00:1F:FF: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
00:1F:FE:00:00:00 /24
HPN Supply Chain
Next
00:20:00:00:00:00 /24
LEXMARK INTERNATIONAL, INC.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
RESPIRONICS INC. holds 2 registered blocks in the IEEE registry, ranking #2,845 of 33,427 organizations by block count.