MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix04:C9:8B:70:00:00 /28
Vendor address305 COMMERCE DRIVE MOORESTOWN Moorestown NJ US 08057-4215
Country🇺🇸 United States
RegisteredMar 28, 2025
Block range04:C9:8B:70:00:00– 04:C9:8B:7F:FF:FF
Address capacity1,048,576
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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04:C9:8B:60:00:00 /28
Annapurna labs
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04:C9:8B:80:00:00 /28
DELTA NETWORKS (XIAMEN) LIMITED
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
OPEX CORPORATION holds 1 registered blocks in the IEEE registry, ranking #22,126 of 33,421 organizations by block count.