can not resolve few sites

[Stephane Bortzmeyer]

[Again, SEND TO THE MAILING LIST, NOT TO ME! I have other things to
do, sometimes.]

On Tue, Nov 30, 2004 at 03:54:08PM +0530,
 Rakesh Man Karmacharya <rakeshman at mos.com.np> wrote 
 a message of 84 lines which said:

> $ dig +trace knipp.de 
...
> ;; Received 94 bytes from 81.91.161.5#53(A.NIC.de) in 842 ms
> 
> knipp.de.               86400   IN      A       195.138.34.3
> knipp.de.               86400   IN      NS      ns1.knipp.de.
> knipp.de.               86400   IN      NS      ns3.knipp.de.
> ;; Received 110 bytes from 194.77.54.1#53(ns1.knipp.de) in 960 ms

OK, everything is normal.

> [rakeshman at sungava rakeshman]$ dig +trace www.gmx.de
...
> ;; reply from unexpected source: 202.52.255.47#53, expected 213.165.64.1#53
> ;; Warning: ID mismatch: expected ID 558, got 32786
> ;; reply from unexpected source: 202.52.255.47#53, expected 213.165.64.1#53
> ;; Warning: ID mismatch: expected ID 558, got 32786
> ;; connection timed out; no servers could be reached

And here is the funny one. I have no idea. What is 202.52.255.47? Your
BIND server? A firewall appliance?