Cosesy ApS

Any device whose MAC address begins with 98:EC:65 has a network interface built by Cosesy ApS. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

98:EC:65

Organization

Cosesy ApS

Address

Tyttebaervej 2 Ans Jylland DK DK-8643

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.