Alarm.com

3 registered MAC prefixes

Frequently asked questions

Which MAC addresses belong to Alarm.com?

Alarm.com has registered 3 address blocks with the IEEE, including 00:1C:FA. Its devices use MAC addresses starting with one of these prefixes.

PrefixLengthBlock type
00:1C:FA/24MA-L (/24, 16,777,216 addresses)
50:40:74/24MA-L (/24, 16,777,216 addresses)
B8:3A:9D/24MA-L (/24, 16,777,216 addresses)