We are not able to resolve few sites but other isp can

[Rakesh Man Karmacharya]

Hi All
i had sent you mail regarding we are not able to resolve few sites like
www.gmx.de
We are using Bind 9-3.0
And when we try to execute commands
dig +norec www.gmx.de ns
it gives the result like this

; <<>> DiG 9.3.0 <<>> +norec www.gmx.de ns
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49914
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;www.gmx.de.                    IN      NS

;; AUTHORITY SECTION:
gmx.de.                 24066   IN      NS      ns.schlund.de.
gmx.de.                 24066   IN      NS      dns.gmx.net.

;; ADDITIONAL SECTION:
ns.schlund.de.          24059   IN      A       195.20.224.97
dns.gmx.net.            110465  IN      A       213.165.64.1

;; Query time: 41 msec
;; SERVER: 202.52.255.47#53(202.52.255.47)
;; WHEN: Thu Dec  2 10:25:46 2004
;; MSG SIZE  rcvd: 110


And when we try to execute command
dig +trace www.gmx.de ns
it gives like this
; <<>> DiG 9.3.0 <<>> +trace www.gmx.de ns
;; global options:  printcmd
.                       455821  IN      NS      H.ROOT-SERVERS.NET.
.                       455821  IN      NS      I.ROOT-SERVERS.NET.
.                       455821  IN      NS      J.ROOT-SERVERS.NET.
.                       455821  IN      NS      K.ROOT-SERVERS.NET.
.                       455821  IN      NS      L.ROOT-SERVERS.NET.
.                       455821  IN      NS      M.ROOT-SERVERS.NET.
.                       455821  IN      NS      A.ROOT-SERVERS.NET.
.                       455821  IN      NS      B.ROOT-SERVERS.NET.
.                       455821  IN      NS      C.ROOT-SERVERS.NET.
.                       455821  IN      NS      D.ROOT-SERVERS.NET.
.                       455821  IN      NS      E.ROOT-SERVERS.NET.
.                       455821  IN      NS      F.ROOT-SERVERS.NET.
.                       455821  IN      NS      G.ROOT-SERVERS.NET.
;; Received 244 bytes from 202.52.255.47#53(202.52.255.47) in 2 ms

de.                     172800  IN      NS      A.NIC.de.
de.                     172800  IN      NS      E.NIC.de.
de.                     172800  IN      NS      F.NIC.de.
de.                     172800  IN      NS      K.NIC.de.
de.                     172800  IN      NS      J.NIC.de.
de.                     172800  IN      NS      H.NIC.de.
de.                     172800  IN      NS      C.DE.NET.
de.                     172800  IN      NS      D.DE.NET.
de.                     172800  IN      NS      G.DE.NET.
de.                     172800  IN      NS      I.DE.NET.
de.                     172800  IN      NS      B.DE.NET.
;; Received 418 bytes from 128.63.2.53#53(H.ROOT-SERVERS.NET) in 2654 ms

gmx.de.                 86400   IN      NS      dns.gmx.net.
gmx.de.                 86400   IN      NS      ns.schlund.de.
;; Received 78 bytes from 81.91.161.5#53(A.NIC.de) in 5135 ms

;; reply from unexpected source: 202.52.255.47#53, expected 213.165.64.1#53
;; Warning: ID mismatch: expected ID 24531, got 5762
;; reply from unexpected source: 202.52.255.47#53, expected 213.165.64.1#53
;; Warning: ID mismatch: expected ID 24531, got 5762
;; connection timed out; no servers could be reached


And when we execute
$ dig www.gmx.de ns

; <<>> DiG 9.3.0 <<>> www.gmx.de ns
;; global options:  printcmd
;; connection timed out; no servers could be reached


I donot know where is the problem
Plz help us
Thanks in Advance
Rakesh Man Karmacharya
Sys.Admin
Mercantile communication Pvt.Ltd
 Nepal