PingPlotter freeware is also a nifty tool that does min/max/avg ping with tracert showing packet loss at each router hop, and has nifty graphs.

All you need to do is plug in the FFXIV IP (199.91.189.25 from above) and enjoy. A while back I let it run each night at different times. I'm with Time Warner and the last hop out of their network space tbone.rr.com to atlas.cogentco.com routers is dropping between 2% up to a whopping 49% of packets, depending on time of day. The final hops to Montreal data center (via mtl.iweb.com) have no loss for me.

Good thing I'm switching ISPs very soon to a different fiber backbone than Time Warner's Road Runner. I bet much of the "server lag" people complain about is their own ISP, or the routing through eastern NA right now, dropping packets. I've seen definite lag on server side events as well, like demon wall push back delayed 5 seconds with battle continuing normally, so their servers aren't perfect either.