I've been getting excellent pings on SEA servers since last night. Every game (about 7 or 8 games) I got decent ping, that is 130 to 200. Not a single 300+ server today.
@
Itachi, I just did a tracert and my route has as many hops as yours, and the second last hop (habib-rafiq) to last hop time is less than a couple of milliseconds, whereas in your case its taking almost 350ms.
That's Valve's fault there I think.