2 Save Energy Ltd

Any device whose MAC address begins with 44:37:19 has a network interface built by 2 Save Energy Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

44:37:19

Organization

2 Save Energy Ltd

Address

The Annexe, Field House Barn Sherborne St John Hampshire GB RG24 9LR

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.