Devices with MAC addresses that start with 44-65-7F were manufactured by Calix Inc.

Device ManufacturerCalix Inc.
2777 Orchard Parkway
San Jose CA 95134
Estimated Devices with 44-65-7F16256250
Estimated Total Devices From Mfg81281250
Other MAC Addresses00-06-31, EC-4F-82, CC-BE-59, 48-77-46
Address Examples