MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1D:C0:00:00:00 /24
Vendor address201 1st Street, Suite 111 Petaluma CA US 94952
Country🇺🇸 United States
RegisteredAug 18, 2007
Block range00:1D:C0:00:00:00– 00:1D:C0: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
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00:1D:BF:00:00:00 /24
Radiient Technologies, Inc.
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00:1D:C1:00:00:00 /24
Audinate Pty L
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Enphase Energy holds 1 registered blocks in the IEEE registry, ranking #11,868 of 33,427 organizations by block count.