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Re: lists of DNS servers by region.

  • From: Tatsuya Kawasaki
  • Date: Thu Dec 12 11:50:25 2002

Stephen,
thnx .. I think query source refer to DNS server right?
not necessary actally host that requesting qurey?

Suppose if a ISP does not have fully messed DNS server then result may not
be  optimum?

---------------------------------------------------
Tatsuya Kawasaki - Engineer III - CSC
tatsuya.kawasaki@allegiancetelecom.com - 240-616-2417
800-581-8711 (24 Hour Support) - 240-616-2414 (fax)
Allegiance Internet


On Wed, 11 Dec 2002, Stephen Sprunk wrote:

> Date: Wed, 11 Dec 2002 10:21:45 -0600
> From: Stephen Sprunk <ssprunk@cisco.com>
> To: Tatsuya Kawasaki <tatsuya@kivex.com>, nanog ml <nanog@merit.edu>
> Subject: Re: lists of DNS servers by region.
>
>
> Tatsuya Kawasaki wrote:
> > Many web sites which are mulihome/mult co-located seem to act
> > differnetly depend on which DNS severs that we  use.
> >
> > Questions:
> > 1. Does anyone have lists of DNS servers by region to may optimize the
> > path?-- of course it may depend on the network topology ...Assume that
> > If ISP is fully messed with others.. ie Teir I provider for exmaple.
> >
> > 2. what is the typical  of method they(web hosts) used to decide
> > which one to give?
>
> Many DNS "load balancing" solutions will return the address of the web
> server closest to the _query source_.  This means these systems work best
> when your recursive DNS servers are topologically closest to your users.
>
> S
>