Stopping name server abuse

[A]

You could ask the registrar/root domain admins to point those domains 
somewhere other than your server; or just delete them from the root 
servers at their perogative.  You might want to give your ex-customer a 
final warning beforehand as to your intent.  It might spur them into 
actionand maybe help deter any potential legal action after the fact.  
I'm not a lawyer.  This is not legal advice.

- A

On 06/24/2018 01:30 PM, Alex wrote:
> Hi,
> We had a former customer who parked about 300 domains with his
> registry on our server but is no longer a customer and hasn't moved
> his domains. There aren't any hosts behind the domains.
>
> Is there anything more I can do to block/prevent them from continually
> querying my system outside of just redirecting them to localhost or
> something?
>
> It's not a terrible amount of traffic, but it's pretty substantial.
>
> Unfortunately asking him nicely didn't work.
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