macadress

OT Systems Limited

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix80:34:57:00:00:00 /24
Vendor addressUnit 1023, 10/F., Landmark North, Sheung Shui, N. T. HK
Country🇭🇰  Hong Kong
RegisteredFeb 23, 2011
Block range80:34:57:00:00:00– 80:34:57: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

80:34:57:00:00:00 80:34:57:7F:FF:FF 80:34:57:FF:FF:FF

Where this block sits

OT Systems Limited holds 1 registered blocks in the IEEE registry, ranking #22,371 of 33,427 organizations by block count.