MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:13:8A:00:00:00 /24
Vendor addressRoom 605,Innovation Building,Hi-tech Industrial Park, QINGDAO SHANDONG CN 266061
RegisteredFeb 6, 2005
Block range00:13:8A:00:00:00– 00:13:8A: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. Feb 6, 2005 – Feb 15, 2018 QINGDAO GOERTEK ELECTRONICS CO.,LTD. name changedaddress changed
  2. Feb 15, 2018 – present Qingdao GoerTek Technology Co., 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.

Qingdao GoerTek Technology Co., Ltd. holds 2 registered blocks in the IEEE registry, ranking #2,798 of 33,427 organizations by block count.

Other blocks registered to Qingdao GoerTek Technology Co., Ltd.