VALCOM CO.,LTD.
Any device whose MAC address begins with 40:B0:A1 has a network interface built by VALCOM CO.,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
- 40:B0:A1
- Organization
- VALCOM CO.,LTD.
- Address
- 7-25 MINOWA 3-CHOME TOYONAKA CITY,OSAKA JP 560-0035
- 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.