macadress

Phoenix Contact GmbH & Co. KG

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:A0:45:00:00:00 /24
Vendor addressPOSTFACH 1341 lower saxony DE D-31812
Country🇩🇪  Germany
RegisteredApr 22, 1998
Block range00:A0:45:00:00:00– 00:A0:45: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. Apr 22, 1998 – Feb 3, 2016 PHOENIX CONTACT GMBH & CO. name changedaddress changed
  2. Feb 3, 2016 – Nov 12, 2024 PHOENIX CONTACT Electronics GmbH name changed
  3. Nov 12, 2024 – present Phoenix Contact GmbH & Co. KG

Example addresses in this block

00:A0:45:00:00:00 00:A0:45:7F:FF:FF 00:A0:45:FF:FF:FF

Where this block sits

Previous 00:A0:44:00:00:00 /24 NTT IT CO., LTD. Next 00:A0:46:00:00:00 /24 SCITEX CORP. LTD.

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

Phoenix Contact GmbH & Co. KG holds 3 registered blocks in the IEEE registry, ranking #1,226 of 33,427 organizations by block count.

Other blocks registered to Phoenix Contact GmbH & Co. KG

A8:74:1D:00:00:00 /24 MA-L CC:CC:EA:00:00:00 /24 MA-L