IAB: an Individual Address Block, a /36 covering 4,096 addresses. IEEE's predecessor to MA-S; no longer issued, but existing assignments remain valid.
Prefix00:50:C2:EF:F0:00 /36
Vendor address168 S. 122nd E. Ave. Tulsa Oklahoma US 74128
Country🇺🇸 United States
RegisteredDec 18, 2011
Block range00:50:C2:EF:F0:00– 00:50:C2:EF:FF: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
Previous
00:50:C2:EF:E0:00 /36
PLR Information Systems Ltd.
Next
00:50:C2:F0:00:00 /36
Syscom Instruments
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Zephyrus Electronics LTD. holds 1 registered blocks in the IEEE registry, ranking #33,151 of 33,427 organizations by block count.