ASTECH INC.

Any device whose MAC address begins with 08:00:81 has a network interface built by ASTECH INC.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

08:00:81

Organization

ASTECH INC.

Address

670 NORTH COMMERCIAL STREET MANCHESTER NH US 03101

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.