http://ffxivhunt.com is the most commonly used tracker.
That said, hunts are pretty much dead at this point. Most people have moved beyond the need for seals and only S ranks give Poetics, I've frequently seen rank As have their position shouted and still sit around untouched for quite a while, people often don't bother updating the kills on the site either.
If you need oils/sands I recommend you try ST or 2nd coil.