macadress

B&W Group LTD

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixEC:66:D1:00:00:00 /24
Vendor addressDale Road Worthing Sussex GB BN11 2BH
Country🇬🇧  United Kingdom
RegisteredMay 1, 2010
Block rangeEC:66:D1:00:00:00– EC:66:D1: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. May 1, 2010 – Jan 30, 2013 B&W Group LTD name changed
  2. Jan 30, 2013 – Jan 31, 2013 B&W Group LTD name changed
  3. Jan 31, 2013 – Feb 14, 2013 B&W Group LTD name changed
  4. Feb 14, 2013 – present B&W Group LTD

Example addresses in this block

EC:66:D1:00:00:00 EC:66:D1:7F:FF:FF EC:66:D1:FF:FF:FF

Where this block sits

B&W Group LTD holds 2 registered blocks in the IEEE registry, ranking #1,585 of 33,421 organizations by block count.