20-30Gbps UDP 1720 traffic appearing to originate from CN in last 24 hours

Mon Jul 20 19:40:09 UTC 2015

On 7/20/2015 2:57 PM, Valdis.Kletnieks at vt.edu wrote:
> On Mon, 20 Jul 2015 19:42:39 +0100, Colin Johnston said:
>> see below for china ranges I believe, ipv4 and ipv6
> You may believe... but are you *sure*?  (Over the years, we've seen
> *lots* of "block China" lists that accidentally block chunks allocated
> to Taiwan or Australia or other Pacific Rim destinations).
>

If you really wanted to go the route of blocking all/almost all China.  
Isn't there a short list of ASNs that provide transit to China 
citizens/networks?
I'm referring to AS4134, AS4837, etc
Wouldn't blackholing any prefix with those ASNs in the AS path 
accomplish the goal and stay up to date with a new prefixes originated 
from China?