OUI Lookup
001cfa
Alarm.com
Manufacturer Information
- OUI Prefix
- 001cfa
- Manufacturer
- Alarm.com
- Address
- 8150 Leesburg Pike Vienna VA US 22182
- Last updated
- 6/9/2026
Vendor Statistics
- Total prefixes
- 3
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 001CFA
The OUI prefix 001CFA is assigned to Alarm.com, based in 8150 Leesburg Pike Vienna VA US 22182 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to Alarm.com.