MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:19:DF:00:00:00 /24
Vendor address101 West 103rd Street Indianapolis IN US 46290-1102
Country🇺🇸 United States
RegisteredOct 16, 2006
Block range00:19:DF:00:00:00– 00:19:DF: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 – Sep 29, 2007 THOMSON APDG name changedaddress changedcountry changed
- Sep 29, 2007 – present Thomson 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.
Thomson Inc. holds 8 registered blocks in the IEEE registry, ranking #394 of 33,421 organizations by block count.
Other blocks registered to Thomson Inc.