[dns-operations] Many dns queries to a.root-servers.net

Dario Aguilar dariojaguilar at gmail.com
Thu Mar 1 19:21:59 UTC 2012


Hi Heather, these queries reach our resolvers all day for at least more than
1 year and have been increasing over time. Not all customers consult every 2
seconds, some do it less frequently but steadily.

On Thu, Mar 1, 2012 at 3:04 PM, Schiller, Heather A <
heather.schiller at verizon.com> wrote:

>
> Warm up for later this month?  Is it every 2 seconds continuously or
> intermittently?  When did it start?
>
> --Heather
>
> -----Original Message-----
> From: Dario Aguilar [mailto:dariojaguilar at gmail.com]
> Sent: Friday, January 13, 2012 4:34 PM
> To: dns-operations at lists.dns-oarc.net
> Subject: Many dns queries to a.root-servers.net
>
> Hi, I'm seeing quite a lot of queries for "a.root-servers.net IN A" in
> the logs of my caching servers. They seem to be coming from home normal DSL
> customers (IPs who would be expected to be using the name servers) with
> each sending one query every 2 seconds.
> They all together represents more than de 10% of the total queries. I am
> guessing it is probably some sort of spyware/malware/virus/router/O.S.
> version but I was wondering if anyone knows offhand?
>
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