macadress

Oceanblue Cloud Technology Limited

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix5C:B1:5F:00:00:00 /24
Vendor address253-261 Hennessy Road Hong Kong Hong Kong HK 999077
Country🇭🇰  Hong Kong
RegisteredJul 1, 2019
Block range5C:B1:5F:00:00:00– 5C:B1:5F: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

5C:B1:5F:00:00:00 5C:B1:5F:7F:FF:FF 5C:B1:5F:FF:FF:FF

Where this block sits

Oceanblue Cloud Technology Limited holds 1 registered blocks in the IEEE registry, ranking #21,852 of 33,427 organizations by block count.