macadress

Büchi Labortechnik AG

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:11:7B:00:00:00 /24
Vendor addressMeierseggstrasse 40 Flawil 9230 CH SG
Country🇸🇬  Singapore
RegisteredJun 3, 2004
Block range00:11:7B:00:00:00– 00:11:7B: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. Jun 3, 2004 – Nov 7, 2009 Büchi Labortechnik AG name changed
  2. Nov 7, 2009 – Feb 6, 2010 Büchi Labortechnik AG name changed
  3. Feb 6, 2010 – Aug 24, 2010 Büchi Labortechnik AG name changed
  4. Aug 24, 2010 – Aug 25, 2010 Büchi Labortechnik AG name changed
  5. Aug 25, 2010 – Nov 17, 2011 Büchi Labortechnik AG name changed
  6. Nov 17, 2011 – Nov 18, 2011 Büchi Labortechnik AG name changed
  7. Nov 18, 2011 – Sep 17, 2012 Büchi Labortechnik AG name changed
  8. Sep 17, 2012 – Nov 29, 2012 Büchi Labortechnik AG name changed
  9. Nov 29, 2012 – Aug 27, 2015 Büchi Labortechnik AG name changedaddress changed
  10. Aug 27, 2015 – present Büchi Labortechnik AG

Example addresses in this block

00:11:7B:00:00:00 00:11:7B:7F:FF:FF 00:11:7B:FF:FF:FF

Where this block sits

Previous 00:11:7A:00:00:00 /24 Singim International Corp. Next 00:11:7C:00:00:00 /24 e-zy.net

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

Büchi Labortechnik AG holds 1 registered blocks in the IEEE registry, ranking #6,219 of 33,421 organizations by block count.