MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:19:F3:00:00:00 /24
Vendor address5025 Galley Rd Colorado Springs CO US 80915
Country🇺🇸 United States
RegisteredOct 16, 2006
Block range00:19:F3:00:00:00– 00:19:F3: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 →
Ownership timeline
- Oct 16, 2006 – Jan 20, 2011 Telematrix, Inc name changed
- Jan 20, 2011 – present Cetis, Inc
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.
Cetis, Inc holds 1 registered blocks in the IEEE registry, ranking #8,117 of 33,421 organizations by block count.