dns zone delegation

[jittinan2 at gmail.com]

Dear All

Domain "bluewin.ch" have registed 4  zone authoritative servers as follow

[Querying whois.nic.ch]
[whois.nic.ch]
whois: This information is subject to an Acceptable Use Policy.
See http://www.switch.ch/id/terms/aup.html


Domain name:
bluewin.ch

Holder of domain name:
Swisscom (Schweiz) AG
SCS-NIT-NIO-SVO-DNW Invoice Center
zuh. Matthias Leisi
Alte Tiefenaustr. 6
CH-3050 Bern
Switzerland
Contractual Language: German

Technical contact:
Swisscom (Schweiz) AG
SCS-NIT-NIO-SVO-DNW Invoice Center
zuh. Matthias Leisi
Alte Tiefenaustr. 6
CH-3050 Bern
Switzerland

*Name servers:
dns1.bluewin.ch [195.186.1.110]
dns2.bluewin.ch [195.186.1.111]
dns3.bluewin.ch [195.186.4.110]
dns4.bluewin.ch [195.186.4.111]*/
/

I have executed following command:

#nslookup
 > server dns1.bluewin.ch
Default server: dns1.bluewin.ch
Address: 195.186.1.110#53
 > set debug
 > set norecure
 > set type=ns
 > bluewin.ch
Server:         dns1.bluewin.ch
Address:        195.186.1.110#53

------------
    QUESTIONS:
        bluewin.ch, type = NS, class = IN
    ANSWERS:
    ->  bluewin.ch
        nameserver = dns2.bluewin.ch.
    ->  bluewin.ch
        nameserver = dns3.bluewin.ch.
    ->  bluewin.ch
        nameserver = dns1.bluewin.ch.
    ->  bluewin.ch
        nameserver = dns4.bluewin.ch.
    AUTHORITY RECORDS:
    ADDITIONAL RECORDS:
------------
bluewin.ch      nameserver = dns2.bluewin.ch.
bluewin.ch      nameserver = dns3.bluewin.ch.
bluewin.ch      nameserver = dns1.bluewin.ch.
bluewin.ch      nameserver = dns4.bluewin.ch.

Zone Authorize server(dns1.bluewin.ch) has replied that there are 4  
zone authorize servers as in whois database

 > set type=a
 > www.bluewin.ch
Server:         dns1.bluewin.ch
Address:        195.186.1.110#53

------------
    QUESTIONS:
        www.bluewin.ch, type = A, class = IN
    ANSWERS:
    AUTHORITY RECORDS:
    ->  www.bluewin.ch
        nameserver = zhbdzgss01.bluewin.ch.
    ->  www.bluewin.ch
        nameserver = zhhdzgss02.bluewin.ch.
    ->  www.bluewin.ch
        nameserver = zhbdzgss02.bluewin.ch.
    ->  www.bluewin.ch
        nameserver = zhhdzgss01.bluewin.ch.
    ADDITIONAL RECORDS:
    ->  zhbdzgss01.bluewin.ch
        internet address = 195.186.26.21
    ->  zhbdzgss02.bluewin.ch
        internet address = 195.186.26.22
    ->  zhhdzgss01.bluewin.ch
        internet address = 195.186.154.21
    ->  zhhdzgss02.bluewin.ch
        internet address = 195.186.154.22
------------
Non-authoritative answer:
*** Can't find www.bluewin.ch: No answer

I  have queied a name www.bluewin.ch  type A  but it send back 4 
referrals in Authority Record then I change server to zhhdzgss02.bluewin.ch

 > server zhhdzgss02.bluewin.ch
Default server: zhhdzgss02.bluewin.ch
Address: 195.186.154.22#53
 > www.bluewin.ch
Server:         zhhdzgss02.bluewin.ch
Address:        195.186.154.22#53

------------
    QUESTIONS:
        www.bluewin.ch, type = A, class = IN
    ANSWERS:
    ->  www.bluewin.ch
        internet address = 195.186.17.33
    AUTHORITY RECORDS:
    ADDITIONAL RECORDS:
------------
Name:   www.bluewin.ch
Address: 195.186.17.33

It has replied an ip of www.bluewin.ch but if I send a query  name 
bluewin.ch type ns

 > set type=ns
 > bluewin.ch
Server:         zhhdzgss02.bluewin.ch
Address:        195.186.154.22#53

------------
    QUESTIONS:
        bluewin.ch, type = NS, class = IN
    ANSWERS:
    AUTHORITY RECORDS:
    ADDITIONAL RECORDS:
------------
*** Can't find bluewin.ch: No answer
 >
It has replied that can not find


domain bluewin.ch have registered 4 zone authorize dns but when I query 
name www.bluewin.ch it send referral to others 4 .I have change to query 
from zhhdzgss02.bluewin.ch it can answer corretly but can not find ns  
record of bluewin.ch.Actually ns type and a of zone should be in same 
file of same dns server but in this case why dns1.bluewin.ch can replie 
ns but can not reply a record bluewin.ch and zhhdzgss02.bluewin.ch can 
reply a record of www.bluewin.ch but can not reply ns


Jittinan Suwanrueangsri
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