prior to 2001, Keith would have been correct. /bill On Sun, Apr 01, 2012 at 02:38:25PM +1200, Keith Davidson wrote:
Hi Joe,
Wasn't too bad guess work from a non-techie like me! I was trying to avoid links to ICANN or the US Govt, just in case readers suspected either or both were part of their favourite evil empire...
Cheers
Keith
On 1/04/2012 10:05 a.m., Joe Abley wrote:
On 2012-03-31, at 17:37, Keith Davidson wrote:
There are 13 Root Servers serving the entire TLD structure of the Internet (both ccTLDs and gTLDs), and also these root servers also resolve the top level of IP Adressing, and some other databases. The 13 Root Servers are numbered A through to M, and mostly are based in the USA. There are hundreds of instances of mirrors of these root servers, including a couple in NZ.
The IANA function is contracted by the US Government, since 1999 the contract has been with ICANN, and there is a 3 way agreement and process between US Government, ICANN and Verisign, to publish the IANA database on the A Root Server. The other 12 Root Servers pick up the database / zone file from the A Root.
That's pretty close, but for a more exact description see supporting text included in "Scaling the Root" ("Report on the Impact on the DNS Root System of Increasing the Size and Volatility of the Root Zone") published in 2009:
http://www.icann.org/en/groups/rssac/root-scaling-study-report-31aug09-en.pd...
The description of root zone distribution in that document is pretty comprehensive.
Joe
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