MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:23:55:00:00:00 /24
Vendor addressBldg1, No.1387, Zhangdong Road, Shanghai CN 201203
RegisteredOct 8, 2008
Block range00:23:55:00:00:00– 00:23:55: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

  1. Oct 8, 2008 – Dec 3, 2009 Kinco Electric (Shanghai) Ltd. name changed
  2. Dec 3, 2009 – present Kinco Automation(Shanghai) Ltd.

Example addresses in this block

Where this block sits

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Kinco Automation(Shanghai) Ltd. holds 1 registered blocks in the IEEE registry, ranking #17,657 of 33,427 organizations by block count.