North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Replacing PSTN with VoIP wise? Was Re: Phone networks strugglein Hurricane Katrina's wake

  • From: Petri Helenius
  • Date: Sat Sep 03 06:46:46 2005 
[email protected] wrote:

A similar problem would be created if a web server relied
on DNS that was only hosted on servers in New Orleans.

Do you (or somebody) know of recent numbers of what percentage of domains have all their DNS servers in;
a) same subnet
b) same AS
c) same geographical "zone" (faultline, floodplain, coastline, etc.)

Obviously if everything served by the DNS is co-located in the same failed facility, it does not matter that much if the names resolve to IP addresses which are unreachable anyway.

Pete