MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix5C:BF:03:00:00:00 /24
Vendor addressValhallavägen 5 Lidingö SE 18151
Country🇸🇪 Sweden
RegisteredAug 27, 2025
Block range5C:BF:03:00:00:00– 5C:BF:03: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
- Aug 27, 2025 – Sep 23, 2025 Emoco Labs Ab name changed
- Sep 23, 2025 – present EMOCO
Example addresses in this block
Where this block sits
EMOCO holds 1 registered blocks in the IEEE registry, ranking #11,707 of 33,427 organizations by block count.