MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixF4:63:49:00:00:00 /24
Vendor addressDigital Tower Aston 1505 Seoul KR 153803
Country🇰🇷 South Korea
RegisteredNov 3, 2009
Block rangeF4:63:49:00:00:00– F4:63:49: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 →
Ownership timeline
- Nov 3, 2009 – Jan 7, 2010 Private name changedaddress changedcountry changed
- Jan 7, 2010 – present Diffon Corporation
Example addresses in this block
Where this block sits
Diffon Corporation holds 1 registered blocks in the IEEE registry, ranking #10,297 of 33,427 organizations by block count.