Did some poking around, and some specific blocks consistently are not responding on the other side of specific entry points. Basically, there may be an issue with some specific devices in Ormuco's sphere of influence. Gathered the numbers and submitted a formal ticket to SE since that is there ISP and some of you guys are reporting that your ISP's are unresponsive about addressing it on their end with their routing partners, but not sure how much traction it will get.

Specifically to note is that IP's right around what has previously been listed for use to a handful of worlds are just flat out not responding along some vectors. Hyperion, Exodus, Moogle, Ragnarok, Gilgamesh, Zalera, possibly more. Little blocks of addresses have just gone AWOL from some paths and one big block is right there between .51 and .65, which contains IP's that have been posted by many to be their world service addresses.

Keeping the fingers crossed that it points someone in the right direction for you guys still having issues. As a short term work-around, some of you may be able to skirt around it by using a VPN service. Many offer a free trial period or a free-use policy that may be sufficient for the less active players, but for the more dedicated user it will likely mean paying for more than the free options provide. It may prove a valuable tool for diagnostic though if any of you have managed to get your ISP involved--it can demonstrate that by coming in from a specific region things behave better, which may give them leads on action they may be able to take to fix things.