On Thu, Sep 26, 2019 at 9:53 PM Christopher Morrow <morrowc.lists@gmail.com> wrote:
Maybe asking from the get-go:
  "What are you trying to do?"

because the question asked is fraught with peril and disaster...

Why?  When you have a serious problem with a specific ASN, it's not unreasonable to drop traffic to that entire ASN.

When you have a serious problem predominantly originating from a certain country, why is it unreasonable to drop traffic to that entire country?  

Just because I own an ASN and participate in the world of BGP, doesn't mean I *must* accept everyone's traffic from all over the world.  My network, my rules(1)

(1) my as in the ASN whom choose to drop prefixes for an entire ASN and/or country.