I would like to fin out where that number is from

I just got a call from that same number, with no message. At 2:30amIs this even allowed?

I just got a call from that same number, with no message. At 2:30am
Is this even allowed?

(418) 683-3634 Is the number for the outgoing line at protectron / security 24 .
Since those line are for outgoing call only that why you cant call back at the number .

123

(418) 683-3634 is, as already reported, for Protectron Security. I received a call from that number late at night. I have a friend who has a Protectron system in her home and they were trying to get hold of her because they were getting a low battery alarm. I am one of her emergency backup numbers. No problem. It's not a sales call.