Qolsys Inc.

Qolsys Inc. holds 2 OUI prefixes in the IEEE registry. Each prefix is the first three octets of a MAC address and covers a block of 16,777,216 addresses, so devices built by Qolsys Inc. draw from a pool of about 33,554,432 possible MAC addresses in total.

Registered address: 1900 The Alameda San Jose Ca US 95126

All 2 prefixes

• 18:C1:E218:C1:E2:00:00:00 – 18:C1:E2:FF:FF:FF
• 3C:31:783C:31:78:00:00:00 – 3C:31:78:FF:FF:FF

Have a full MAC address? Look it up to see which of these prefixes it belongs to — or browse the full manufacturer directory.