MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1D:55:00:00:00 /24
Vendor address5758 W. Las Positas Avenue Pleasanton CA US 94588
Country🇺🇸 United States
RegisteredAug 18, 2007
Block range00:1D:55:00:00:00– 00:1D:55: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
00:1D:54:00:00:00 /24
Sunnic Technology & Merchandise INC.
Next
00:1D:56:00:00:00 /24
Kramer Electronics Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ZANTAZ, Inc holds 1 registered blocks in the IEEE registry, ranking #33,077 of 33,427 organizations by block count.