MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix80:3A:59:00:00:00 /24
Vendor address1025 Lenox Park Blvd Atlanta GA US 30319
Country🇺🇸 United States
RegisteredSep 16, 2017
Block range80:3A:59:00:00:00– 80:3A:59: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
AT&T holds 6 registered blocks in the IEEE registry, ranking #471 of 33,427 organizations by block count.
Other blocks registered to AT&T