MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:40:17:00:00:00 /24
Vendor address157 West 7065 South Salt Lake City UT US 84047
RegisteredSep 8, 2000
Block range00:40:17:00:00:00– 00:40:17: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. Sep 8, 2000 – Jun 5, 2004 XCD INC. name changedaddress changed
  2. Jun 5, 2004 – Apr 8, 2006 TROY Group, Inc. name changedaddress changed
  3. Apr 8, 2006 – present Silex Technology America

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.

Silex Technology America holds 1 registered blocks in the IEEE registry, ranking #27,394 of 33,421 organizations by block count.