macadress

Weidmüller Interface GmbH & Co. KG

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:15:7E:00:00:00 /24
Vendor addressKlingenbergstraße 16 Detmold DE 32758
Country🇩🇪  Germany
RegisteredAug 24, 2005
Block range00:15:7E:00:00:00– 00:15:7E: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 24, 2005 – Aug 24, 2010 HEYFRA ELECTRONIC gmbH name changedaddress changed
  2. Aug 24, 2010 – Aug 25, 2010 Weidmüller Interface GmbH & Co. KG name changedaddress changed
  3. Aug 25, 2010 – Nov 17, 2011 Weidm�ller Interface GmbH & Co. KG name changedaddress changed
  4. Nov 17, 2011 – Nov 18, 2011 Weidmüller Interface GmbH & Co. KG name changedaddress changed
  5. Nov 18, 2011 – Sep 17, 2012 Weidmüller Interface GmbH & Co. KG name changedaddress changed
  6. Sep 17, 2012 – Nov 29, 2012 Weidmüller Interface GmbH & Co. KG name changedaddress changed
  7. Nov 29, 2012 – Aug 27, 2015 Weidmüller Interface GmbH & Co. KG name changedaddress changed
  8. Aug 27, 2015 – present Weidmüller Interface GmbH & Co. KG

Example addresses in this block

00:15:7E:00:00:00 00:15:7E:7F:FF:FF 00:15:7E:FF:FF:FF

Where this block sits

Previous 00:15:7D:00:00:00 /24 POSDATA Next 00:15:7F:00:00:00 /24 ChuanG International Holding CO.,LTD.

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

Weidmüller Interface GmbH & Co. KG holds 1 registered blocks in the IEEE registry, ranking #32,037 of 33,427 organizations by block count.