***note that the servers in Montreal begin with 199, servers in Tokyo begin with 124. This is important because the client is in communication with BOTH countries for various tasks***
frontier.ffxiv.com 124.150.157.190
patch-gamever.ffxiv.com 124.150.157.126
neolobby01.ffxiv.com 124.150.157.158
neolobby02.ffxiv.com 199.91.189.74
neolobby03.ffxiv.com 124.150.157.157
neolobby04.ffxiv.com 199.91.189.93
neolobby05.ffxiv.com 124.150.157.156
neolobby06.ffxiv.com 199.91.189.94
secure.square-enix.com 124.150.158.110
199.91.189.74
199.91.189.60
199.91.189.38
199.91.189.36
199.91.189.31
199.91.189.25
(basically, a lot of IP's in this subnet--all of them used by the servers in Canada for the NA/EU subscriptions)
Patches appear to have been delivered via Akamai at times? A few particular IP's seem to come up routinely:
24.143.200.227
24.143.200.234
24.143.200.241
Several SE IP's in Japan routinely show up during activity requiring authentication (login and such), and may prove useful if issues are routinely during sign-on to both the mogstation and the game, as well as changing zones in the game:
124.150.158.110
124.150.158.117
124.150.157.126
124.150.157.190
(Again, there is a BIG subnet here owned by SE. And yes, that is both 157 and 158 in the 3rd octet. Some of the IP's in this group have been seen in use with other games in the past)