MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:19:0D:00:00:00 /24
Vendor addressc/o 1394 Trade Association Southlake TX US 76092
Country🇺🇸 United States
RegisteredJul 19, 2006
Block range00:19:0D:00:00:00– 00:19:0D: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 →
Example addresses in this block
Where this block sits
Previous
00:19:0C:00:00:00 /24
Encore Electronics, Inc.
Next
00:19:0E:00:00:00 /24
Atech Technology Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
IEEE 1394c holds 1 registered blocks in the IEEE registry, ranking #15,634 of 33,427 organizations by block count.