Alarm.com

Alarm.com holds 3 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 Alarm.com draw from a pool of about 50,331,648 possible MAC addresses in total.

Registered address: 8150 Leesburg Pike Vienna VA US 22182

All 3 prefixes

• 00:1C:FA00:1C:FA:00:00:00 – 00:1C:FA:FF:FF:FF
• 50:40:7450:40:74:00:00:00 – 50:40:74:FF:FF:FF
• B8:3A:9DB8:3A:9D:00:00:00 – B8:3A:9D: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.