Also got a call from this number. Didn't answer but seeing as other people also got calls the same day I'd assume its a computer confirming valid phone numbers from people likely to answer unknown numbers. Thus marking your number as more valuable when selling info to telemarketers and such.
Got a call from this number, and it took a while for them to answer back. Asked if I had time to talk about auto insurance rates. I said no, then they hung up. Never told me who they were.