From Nov 2017...

Seth Mattinen sethm at
Tue Apr 3 03:42:55 UTC 2018

On 4/2/18 7:43 PM, J Crowe wrote:
> That database could possibly be ingested and used locally. Traffic may 
> not even be traversing to the database hosted by IBM.
> At least they are open about where they are getting the data that allows 
> for blocking to certain FQDNs.

Even if it does traverse somewhere to ask the database, it wouldn't be 
the DNS user that's making that request, it would be coming from 
whatever anycast node is handling it decoupled from the actual user's 
DNS query.

More information about the NANOG mailing list