macadress

BAEKCHUN I&C Co., Ltd.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix40:9F:C7:00:00:00 /24
Vendor address67-5, Gyesu-dong Bucheon-si Gyeonggi-do KR 422-070
Country🇰🇷  South Korea
RegisteredAug 20, 2011
Block range40:9F:C7:00:00:00– 40:9F:C7: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. Aug 20, 2011 – Jan 30, 2013 BAEKCHUN ENC Co., Ltd. name changedaddress changed
  2. Jan 30, 2013 – Jan 31, 2013 BAEKCHUN I&C Co., Ltd. name changedaddress changed
  3. Jan 31, 2013 – Feb 14, 2013 BAEKCHUN ENC Co., Ltd. name changedaddress changed
  4. Feb 14, 2013 – present BAEKCHUN I&C Co., Ltd.

Example addresses in this block

40:9F:C7:00:00:00 40:9F:C7:7F:FF:FF 40:9F:C7:FF:FF:FF

Where this block sits

BAEKCHUN I&C Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #6,270 of 33,421 organizations by block count.