macadress

Institut für Prüftechnik

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:23:9F:00:00:00 /24
Vendor addressSchulstraße 3 Todtenweis Bayern DE 86447
Country🇩🇪  Germany
RegisteredOct 8, 2008
Block range00:23:9F:00:00:00– 00:23:9F: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. Oct 8, 2008 – Nov 7, 2009 Institut für Prüftechnik name changed
  2. Nov 7, 2009 – Feb 6, 2010 Institut für Prüftechnik name changed
  3. Feb 6, 2010 – Aug 24, 2010 Institut für Prüftechnik name changed
  4. Aug 24, 2010 – Aug 25, 2010 Institut für Prüftechnik name changed
  5. Aug 25, 2010 – Nov 17, 2011 Institut für Prüftechnik name changed
  6. Nov 17, 2011 – Nov 18, 2011 Institut für Prüftechnik name changed
  7. Nov 18, 2011 – Sep 17, 2012 Institut für Prüftechnik name changed
  8. Sep 17, 2012 – Nov 29, 2012 Institut für Prüftechnik name changedaddress changed
  9. Nov 29, 2012 – Aug 27, 2015 Institut für Prüftechnik name changedaddress changed
  10. Aug 27, 2015 – present Institut für Prüftechnik

Example addresses in this block

00:23:9F:00:00:00 00:23:9F:7F:FF:FF 00:23:9F:FF:FF:FF

Where this block sits

Previous 00:23:9E:00:00:00 /24 Jiangsu Lemote Technology Corporation Limited Next 00:23:A0:00:00:00 /24 Hana CNS Co., LTD.

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

Institut für Prüftechnik holds 1 registered blocks in the IEEE registry, ranking #16,239 of 33,427 organizations by block count.