macadress

A Beltrónica-Companhia de Comunicações, Lda

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:15:34:00:00:00 /24
Vendor addressRua Dr. José Baptista de Sousa, 27 Lisbon PT 1549-002 Lis
Country🇵🇹  Portugal
RegisteredJul 21, 2005
Block range00:15:34:00:00:00– 00:15:34: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. Jul 21, 2005 – Nov 7, 2009 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  2. Nov 7, 2009 – Feb 6, 2010 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  3. Feb 6, 2010 – Aug 24, 2010 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  4. Aug 24, 2010 – Aug 25, 2010 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  5. Aug 25, 2010 – Nov 17, 2011 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  6. Nov 17, 2011 – Nov 18, 2011 A BELTRÓNICA, Companhia de Comunicações, Lda name changed
  7. Nov 18, 2011 – Sep 17, 2012 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  8. Sep 17, 2012 – Nov 29, 2012 A BELTRÓNICA, Companhia de Comunicações, Lda name changedaddress changed
  9. Nov 29, 2012 – Aug 27, 2015 A Beltrónica-Companhia de Comunicações, Lda name changedaddress changed
  10. Aug 27, 2015 – present A Beltrónica-Companhia de Comunicações, Lda

Example addresses in this block

00:15:34:00:00:00 00:15:34:7F:FF:FF 00:15:34:FF:FF:FF

Where this block sits

Previous 00:15:33:00:00:00 /24 NADAM.CO.,LTD Next 00:15:35:00:00:00 /24 OTE Spa

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

A Beltrónica-Companhia de Comunicações, Lda holds 1 registered blocks in the IEEE registry, ranking #3,636 of 33,421 organizations by block count.