ALCOMA, spol. s r.o.

Any device whose MAC address begins with 00:1E:57 has a network interface built by ALCOMA, spol. s r.o.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:1E:57

Organization

ALCOMA, spol. s r.o.

Address

Klukovice 313, Praha - 5 Praha CZ 152 00

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.