Who called from 3163003000

Just blocked this caller on my iPhone.
WTF,who are these guys?

called my mobile phone @1405.  No one there.  Probably spoofed number.

My phone has been on DO NOT CALL list for years....which DNC is a joke!!!! Re-registered it in October. Don't answer calls not in my contact list...don't give out # to anyone non in my contact list.  Don't know anyone in KS.  Therefore this is a telemarketer!