MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix20:87:AC:00:00:00 /24
Vendor address48501 Warm Springs Blvd. Fremont CA US 94539
Country🇺🇸 United States
RegisteredDec 21, 2013
Block range20:87:AC:00:00:00– 20:87:AC: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
AES motomation holds 1 registered blocks in the IEEE registry, ranking #4,324 of 33,427 organizations by block count.