Don't trust the IP locator on this site. It's actually quite broken, probably using an database years out of date by now.

It even tells me I'm in Queensland, Australia. WAY off.

VisualRoute is a far better tool if you want to locate an address geographically; they actually keep the database up to date.

And to the best of my knowldge, Verizon does not offer Internet in Montreal. Unless this person is using a cellphone (and even then it's unlikely), something is amiss...