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:C2:34:30:00 /36
Vendor addressABB Industrial Park, Torch Hi-Tech Industrial Development Zone Xiamen S.E.Z. Fujian Province CN 361006
Country🇨🇳 China
RegisteredJul 30, 2008
Block range00:50:C2:34:30:00– 00:50:C2:34:3F: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.
ABB Xiamen Switchgear Co. Ltd. holds 1 registered blocks in the IEEE registry, ranking #3,748 of 33,421 organizations by block count.