Digital Control Technology Limited (AC:91:5D:00:00:00 /24)

Digital Control Technology Limited MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

PrefixAC:91:5D:00:00:00 /24

Vendor addressUnit 1805-06, 18/F, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hong Kong Hong Kong HK 00000

Block rangeAC:91:5D:00:00:00– AC:91:5D: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

AC:91:5D:00:00:00 AC:91:5D:7F:FF:FF AC:91:5D:FF:FF:FF