High Latency

[Juneau]

I've played on the server for 7 years now and my normal latency has always been around 100ms.
Starting two days ago i've seen my latency spike and maintain 250-350ms.

Now i know what you're going to ask
"are you downloading?"
"is someone else using your internet?"
"streaming?"
The answer is no, none of that has ever effected my latency with the server, even when it's just me using it the high latency remains the same.
Late last night it dropped down to 200ms for about 10 minutes then shot back up to 650ms.


Anyone have any idea whats going on?
I asked my guild and there are at least 10 others having much higher latency then normal.