MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixB4:28:F1:00:00:00 /24
Vendor addressRm1207, Kolon Science Valley, 811, Seoul KR 152050
Country🇰🇷 South Korea
RegisteredOct 7, 2010
Block rangeB4:28:F1:00:00:00– B4:28:F1: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
E-Prime Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #11,003 of 33,427 organizations by block count.