I have been contacting them via twitter direct message the last two days and I finally got someone who gave me a case number, and they are supposed to call me in the next 48 hours. I'll report back here what I find out. They are a big company with a lot of customers, so it may take some real complaining to get to an actual department that actually has the knowledge or know how to resolve anything.
One thing to note, I've done more research and 198.32.176.137 GE-0-0-1.0.EJR02.PAO001.FLAGTEL.COM is part of a US IP block assigned to a company named Integra Telecom. While it may not be Integra themselves that is handling this hop, they are the ones who have assigned the IP to whoever is.
Frontier cannot really blame it on SE if their traffic is never even reaching Japan in the first place. If you report it to Frontier again, don't let them tell you it is beyond their control. The reality is that while it may be outside their immediate network, they should actually be contacting the group they are pointing that traffic at, or else they should be searching out assigning a new route for that traffic to go through if it is causing failure to their customers.
I've been able to connect to two other ISP's and the routing that those ISP's are using are successful.
Adding the link I found: https://bgpview.io/ip/198.32.176.137
