North American Network Operators Group|
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Re: Replacing PSTN with VoIP wise? Was Re: Phone networks strugglein Hurricane Katrina's wake
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.