Re: address of root name servers?
- From: "Ben" <e@xxxx>
- Date: Sun, 22 May 2005 10:45:53 +0200
Thanks for replying.
To be sure i understand this: (if you don't mind)
In the mmc of DNS on my DC, in Cached Lookups, i see this:
directory 'com'
directory 'net'
(same as parent folder) NS j.root-servers.net
(same as parent folder) NS b.root-servers.net
....
(same as parent folder) NS k.root-servers.net
When clicking on 'com', i see:
directory 'chekcpoint'
directory 'zonelabs'
(same as parent folder) NS a.gtld-servers.net
etc ..
When clicking on 'net', i see:
directory 'GTLD-servers'
directory 'root-servers'
A A 192.5.6.30
A AAAA 2001:0503:a83e:0000:0000...
B A ...
B AAAA ...
....
When clicking on 'root-servers, i see:
a A 198.41.0.4
b A ...
c A ...
....
Can you explain me what this represent?
Why do i have a diretcory 'com' and 'net' and not e.g. 'be' or 'gov'?
Why do i have a directory 'checkpoint ' and 'zonelabs'? Where do they come
from?
What are the root-servers and the GTLD-servers?
What is type AAAA?
What represents actually j.root-servers.net for example?
Thanks in advance for your time
bob
"Herb Martin" <news@xxxxxxxxxxxxxx> wrote in message
news:%23Iez2olXFHA.3040@xxxxxxxxxxxxxxxxxxxxxxx
> "Ben" <e@xxxx> wrote in message
news:#Me4CaiXFHA.228@xxxxxxxxxxxxxxxxxxxxxxx
> > Hi,
> >
> > I would like to know where the addresses of the root name servers (.us,
> .be,
> > .com etc ..) are saved.
>
> Those are NOT "root" zones you list. The root zone is
> name "." (pronounced "DOT" usually).
>
> Technically those (.com, us, etc.) are "top level zones".
>
> They are kept on one of the DNS servers which are
> delegated from the root servers to hold that particular
> zone -- the root servers and many of those TLD zones
> servers are spread around the world with the
> majority/plurality of the traditional zones (com, net, edu)
> being physically in the US or sometimes in the country
> for two letter country code servers (.iq was for a many
> years in the US instead of in Iraq.)
>
> > And suppose one of those addresses doesn't match
> > anymore, how to let know that to the hole world?
>
> It is the responsibility of the zone DNS admin to make
> sure the parent domain can find the correct DNS servers.
>
> I believe that (most) of the traditional top level 3-letter
> domains are now kept on "one set" of DNS servers but
> there may be exceptions (e.g., .com and .net are both on
> GTLD-SERVERS.)
>
> You can always just query for the zones and "work your way
> down" using NSLookup or some such:
>
> nslookup -q=ns .
>
> Among others this gives:
>
> C.ROOT-SERVERS.NET internet address = 192.33.4.12
>
> And you can (use one of those IPs to) perform (terminate with DOT):
>
> nslookup -q=ns com. 192.33.4.12
>
> Among others this gives:
>
> A.GTLD-SERVERS.NET internet address = 192.5.6.30
>
> And you can do country codes like this (terminate with DOT):
>
> nslookup -q=ns pk. 192.33.4.12
>
> Which gives:
>
> AUTH51.NS.UU.NET internet address = 198.6.1.162
>
> From a Top Level server you can of course check your won
> delegation thusly:
>
> nslookup -q=NS learnquick.com. 192.5.6.30
>
> Which gives:
>
> ns1.learnquick.com internet address = 68.178.144.60
> ns2.learnquick.com internet address = 68.178.144.61
> --
> Herb Martin, MCSE, MVP
> Accelerated MCSE
> http://www.LearnQuick.Com
> [phone number on web site]
>
>
.
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