macadress

TKH Security B.V.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1E:D1:00:00:00 /24
Vendor addressWerner von Siemensstraat 7 Zoetermeer ZH NL 2712PN
Country🇳🇱  Netherlands
RegisteredNov 20, 2007
Block range00:1E:D1:00:00:00– 00:1E: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. Nov 20, 2007 – Aug 24, 2013 Keyprocessor B.V. name changed
  2. Aug 24, 2013 – May 23, 2014 2Wire, Inc. name changed
  3. May 23, 2014 – Sep 24, 2025 Keyprocessor B.V. name changedcountry changed
  4. Sep 24, 2025 – present TKH Security B.V.

Example addresses in this block

00:1E:D1:00:00:00 00:1E:D1:7F:FF:FF 00:1E:D1:FF:FF:FF

Where this block sits

Previous 00:1E:D0:00:00:00 /24 Ingespace Next 00:1E:D2:00:00:00 /24 Ray Shine Video Technology Inc

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

TKH Security B.V. holds 2 registered blocks in the IEEE registry, ranking #3,263 of 33,421 organizations by block count.

Other blocks registered to TKH Security B.V.

00:04:7E:00:00:00 /24 MA-L