Taking these at face value based on my screenshots of Pingplotter, I would think it’s either Cogentco or Twelve99. The first hop with packet loss reported is within Cogentco’s network, and then continues into Twelve99, though for them it may be just because it trickles in from Cogentco.
I’m definitely not a network expert by any means, but this gives us a good idea of what’s going on and where at least.
The lag and d/c’s since reset have been awful!
Is there anything we can do in the moment to fix it/make it not as much of a problem or do we just let it ride until it blows over on its own
Probably use a VPN and don’t join dungeons, raids or battlegrounds.
We’re at the internet’s mercy for now I’m afraid. I’m running pingplotter right now to monitor my connection to battle.net while I play. As soon as something starts going out of whack, I’ll just logout and wait. 
Thank you for being so informative, this stuff been confusing me for the better half of a week but you been a huge help 
Welp, here we go again. As we can see here, on the left side of the graph at the bottom things were great. Now about 8 minutes ago, the lag started up.
https://i.imgur.com/a2Evofo.png
Edit - Lol, 10 secs after I posted this, it cleared up. /knock on wood
Yeah was playing on US servers and it started lagging again, glad it didn’t last 2 hours like yesterday
You’re having packet loss on the CongentCo nodes in the middle of that route. It’s also sending out a lot of bad packets to all hops beyond it. Yikes. Call the ISP, provide this proof to them.
If Skelzarr’s ISP and Blizzard both contact CogentCo and others that are having/causing problems, it will be more likely to get results.
My ISP won’t bother as it’s not on them, and I’m not gonna hold my breath that Blizzard will either.
I’m emailing Cogentco’s support directly with the screenshots and times it happens. Now that we’ve established that this has been happening every night around the same time for the past few days, that may help them determine what is going on.
Edit - Email with screenshots has been sent. 
I just got dc’d after having the ridiculous lag again, right before the first boss of a dungeon, and I probably have the deserter debuff.
Edit: “World Server is down”. Somehow, I doubt that.
And now the lag is happening during the day. It’s not anything on my end, we have 2 users on the internet right now, and we usually have 4 or 5 with no problems.
According to speedtest(dot)net:
Ping 23
Download 112 mpbs
Upload 24 mbps
A speedtest pings a hyperlocal server (usually owned by your ISP) to tell you the max speed your internet could reach by using small data packets.
Is that Mbps or MBps?
It’s Mbps. I know there’s a site, or maybe more, that lets you test your connection speed and packet info to specific servers, but it’s been years and I have had health conditions come up that affect my memory since then.
The speedtest page also says it tested to multi connections, and NextLight in Denver.
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