I got a phone call from this number, 215-904-1190. Caller ID said Philadelphia PA. They did not leave a message. I dialed back but it just rang, never got an anwwer. Who is this?

I got a call from this number, 215-904-1190. Caller ID said Philadelphia PA. No message was left. I called the number but it just rang, no one ever answered. Who is this?

I got a call from this number today.  Thought it may be someone I knew since I lived in Philly for awhile.  Haven't tried to call it back - probably won't.  They didn't leave a message, therefore must not be important.