Devices with MAC addresses that start with 00-06-31 were manufactured by Calix Inc.

Device ManufacturerCalix Inc.
2777 Orchard Parkway
San Jose CA 95134
Estimated Devices with 00-06-3116256250
Estimated Total Devices From Mfg81281250
Other MAC Addresses44-65-7F, EC-4F-82, CC-BE-59, 48-77-46
Address Examples