Received a message on my answering machine from 416-477-2174 and the individual identified themselves as Officer John Parker and indicated that I, or my attorney needed to return the call asap.  According to postings of different phone numbers but the same individual's name used, this is a scam and no one should call this number back.

Same here, I called back under another number and asked them to identify themselves and they never did.

BTW John Parker has an Asian accent. Not too swift

I alaso received a call 416-477-2174 and the individual identified himself as Officer John Parker of Revenue and indicated that I, or my attorney needed to return the call asap.  When I did not call back, I received the same call again about 1hr 30min later.. Ignored it as well.

I too got two phone calls today from 1-416-477-2174. A recording comes on saying they are from RCA, and you need to call back asap. My husband did. A asian guy spoke saying he was a Officer, asking for a the initial of a person in your house with a last name. I asked him to tell me who they were looking for he could not say. He said "You tell me". I said No I don't think so you called me. I asked him if I could speak to his supervisor and what would his name be, he said "I was wasting his time", and would be dealing with the RCMP, I said fine, bring them on then, and hung up. They are trying to disguise them selves saying they are from Revenue Canada Agency. Have your telephone company block the number