You will find here up-to-date vendor information including vendor address, url for driver download and network configuration information as well as all all belonging mac adresses.
Vendor name: Xircom
2300 Corporate Center Dr.
Thousand Oaks CA 91320
Website for driver download: http://www.intel.com/support/network/xc/index.htm
All MACs beginning with owned by the vendor Xircom in 2300 Corporate Center Dr. Thousand Oaks Ca 91320 United States. You will find support for your device on the vendor webpage here. This registered address pool can address a maximum of 50.331.648 devices.