I had a bad feeling throughout the hand, like I was in the middle of a cooler and destined to go broke. However, as you say, it seems very risky for him not to raise the flop with AK, QQ, JJ, or QJ. I'd say tentatively-played (and perhaps rightfully so) AA or KK are in his range. Perhaps A
J
or K
J
, but again, those seem like prime candidates to pile the chips in earlier in the hand.
In my experience, it seems that in most cases when someone flops a monster and disguises it by calling the flop, they are ready to jam it in on the turn. This is probably because the pot is usually more conducive to getting all of the money in by that point. Also, if they get it in on the turn, they don't have to deal with scare cards on the river affecting their own hand or their opponent's.
To make a long story short, I'd really expect to hear from him on the turn if I'm behind.
It's pretty narrow, but I think the most logical range by the river is AA, KK, AQ, and KQ. It's probably wider, but I just can't make sense of it.