MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix00:1B:C5:09:D0:00 /36
Vendor address200 Commerce Dr Rochester NY US 14623
Country🇺🇸 United States
RegisteredMay 20, 2013
Block range00:1B:C5:09:D0:00– 00:1B:C5:09:DF: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.
Navitar Inc holds 1 registered blocks in the IEEE registry, ranking #20,742 of 33,427 organizations by block count.