macadress

ADVA Optical Networking Ltd.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:D0:8B:00:00:00 /24
Vendor addressADVAntage House York GB YO30 4RY
Country🇬🇧  United Kingdom
RegisteredSep 8, 2000
Block range00:D0:8B:00:00:00– 00:D0:8B: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. Sep 8, 2000 – Jan 24, 2001 STORAGE AREA NETWORKS, LTD. name changed
  2. Jan 24, 2001 – Jan 14, 2008 ADVA Limited name changedaddress changed
  3. Jan 14, 2008 – Jan 30, 2013 ADVA Optical Networking Ltd name changedaddress changed
  4. Jan 30, 2013 – Jan 31, 2013 ADVA Optical Networking Ltd. name changedaddress changed
  5. Jan 31, 2013 – Feb 14, 2013 ADVA Optical Networking Ltd name changedaddress changed
  6. Feb 14, 2013 – present ADVA Optical Networking Ltd.

Example addresses in this block

00:D0:8B:00:00:00 00:D0:8B:7F:FF:FF 00:D0:8B:FF:FF:FF

Where this block sits

Previous 00:D0:8A:00:00:00 /24 PHOTRON USA Next 00:D0:8C:00:00:00 /24 GENOA TECHNOLOGY, INC.

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

ADVA Optical Networking Ltd. holds 7 registered blocks in the IEEE registry, ranking #406 of 33,421 organizations by block count.

Other blocks registered to ADVA Optical Networking Ltd.

00:0B:90:00:00:00 /24 MA-L 00:80:EA:00:00:00 /24 MA-L 18:BC:57:00:00:00 /24 MA-L 28:9A:F7:00:00:00 /24 MA-L 84:C8:07:00:00:00 /24 MA-L B8:38:EF:00:00:00 /24 MA-L