macadress

HyunJu Computer Co., Ltd.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:09:65:00:00:00 /24
Vendor address222-22, Hyunju B/D, Guro 3 Dong, Gurogu Seoul KR 152-848
Country🇰🇷  South Korea
RegisteredMar 29, 2002
Block range00:09:65:00:00:00– 00:09:65: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. Mar 29, 2002 – Apr 1, 2005 Private name changedaddress changedcountry changed
  2. Apr 1, 2005 – Jun 28, 2005 HyunJu Computer Co., Ltd. name changedaddress changedcountry changed
  3. Jun 28, 2005 – Jun 23, 2009 Private name changedaddress changedcountry changed
  4. Jun 23, 2009 – present HyunJu Computer Co., Ltd.

Example addresses in this block

00:09:65:00:00:00 00:09:65:7F:FF:FF 00:09:65:FF:FF:FF

Where this block sits

Previous 00:09:64:00:00:00 /24 Hi-Techniques, Inc. Next 00:09:66:00:00:00 /24 TRIMBLE EUROPE BV

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

HyunJu Computer Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #15,394 of 33,427 organizations by block count.