Here is some supporting date for this users complaint. I too am having the issue and spent a half hour or more with online tech support today with no comments other than "run this speed test" and "reboot your router".
The problem is obviously not directly on verizon's hardware, but it is someplace in between the Square-Enix servers and the Northern Va route to them.
There are probably 50-100 users alone actively complaining on the Square-Enix forums about issue in the northern va area with FiOS and this game, I'm going to assume the previous users posts highlight them.
The issue is now also coming up on reddit, not just NoVA users. However, the commonality are the TINET.NET routers on hops 8 and 9 in my example.
Verizon, please do anything you can to help resolve. The game provider is so overwhelmed with game launch issues, we're not getting much assistance otherwise.
LOVE my Verizon speed going everywhere else, just not to my FFXIV server... :(
3 28 ms 14 ms 10 ms G0-9-2-6.WASHDC-LCR-21.verizon-gni.net [130.81.97.106]
4 9 ms 8 ms 8 ms ae1-0.RES-BB-RTR1.verizon-gni.net [130.81.209.206]
5 11 ms 12 ms 11 ms 0.ae5.XL1.IAD8.ALTER.NET [152.63.8.121]
6 9 ms 8 ms 8 ms 0.xe-10-0-1.GW9.IAD8.ALTER.NET [152.63.33.161]
7 * 14 ms 14 ms tinet-gw.customer.alter.net [152.179.50.30]
8 41 ms 39 ms 37 ms xe-1-0-0.mtl10.ip4.tinet.net [89.149.185.41]
9 41 ms 37 ms 40 ms ormuco-gw.ip4.tinet.net [216.221.156.110]
10 47 ms 41 ms * 192.34.76.2
11 47 ms 41 ms 42 ms 199.91.189.234
12 37 ms 39 ms 38 ms 199.91.189.74
Reply from 216.221.156.110: bytes=64 time=39ms TTL=250
Reply from 216.221.156.110: bytes=64 time=37ms TTL=250
Request timed out.
Request timed out.
Reply from 216.221.156.110: bytes=64 time=40ms TTL=250
Reply from 216.221.156.110: bytes=64 time=34ms TTL=250
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Reply from 216.221.156.110: bytes=64 time=38ms TTL=250
Reply from 216.221.156.110: bytes=64 time=32ms TTL=250
Request timed out.
Reply from 216.221.156.110: bytes=64 time=38ms TTL=250
Request timed out.
Reply from 216.221.156.110: bytes=64 time=38ms TTL=250
Reply from 216.221.156.110: bytes=64 time=38ms TTL=250
Reply from 216.221.156.110: bytes=64 time=39ms TTL=250
Reply from 216.221.156.110: bytes=64 time=35ms TTL=250
Request timed out.
Reply from 216.221.156.110: bytes=64 time=38ms TTL=250
Reply from 216.221.156.110: bytes=64 time=42ms TTL=250