Picked up, no answer.

Time Warner Cable Security / IntelligentHome
Emergency Response Center / Alarm Monitoring Central Station
1-800-547-3229 / 315-432-0344
They have a center in Syracuse, NY as well as Centenntial, CO - though the calls from Centennial still show the 315 area code as the source.

I received 2 calls today from this number 1 minute apart.  It was time Warner Alarm response center.  The reason for the call matched an alert I received on my alarm so it is legit.  Was not sure until she gave me the exact detail of the alarm.  I was checking my phone app at the same time as this call.  All was good

calls at 3:15   Hangs up

Don't know that this is legit, I doubt it. I don't have alarm service thru Time Warner. I don't call back suspect numbers.