que donne

dig www.google.com

39.103et un traceroute 74.125.

Tu devrais avoir quelque chose de semblable :

godzil@MacBook-Pro-de-MTR ~ $ dig www.google.com

; <<>> DiG 9.4.2-P2 <<>> www.google.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36030
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.google.com.			IN	A

;; ANSWER SECTION:
www.google.com.		594411	IN	CNAME	www.l.google.com.
www.l.google.com.	263	IN	A	74.125.39.103
www.l.google.com.	263	IN	A	74.125.39.99
www.l.google.com.	263	IN	A	74.125.39.147
www.l.google.com.	263	IN	A	74.125.39.104

;; Query time: 52 msec
;; SERVER: 89.2.0.1#53(89.2.0.1)
;; WHEN: Tue Nov 25 00:15:55 2008
;; MSG SIZE  rcvd: 116

godzil@MacBook-Pro-de-MTR ~ $ traceroute 74.125.39.103
traceroute to 74.125.39.103 (74.125.39.103), 64 hops max, 40 byte packets
 1  XXX.XXX.XXX.XXX (XXX.XXX.XXX.XXX)  60.192 ms  11.144 ms  11.701 ms
 2  XXX-XXX-X-XXX.rev.numericable.fr (XXX.XXX.XXX.XXX)  13.473 ms  22.135 ms  13.871 ms
 3  ip-XXX.net-XX-XXX-X.static.numericable.fr (XXX.XXX.XXX.XXX)  27.917 ms  13.007 ms  10.129 ms
 4  209.85.250.142 (209.85.250.142)  11.900 ms  13.368 ms  24.832 ms
 5  72.14.232.104 (72.14.232.104)  36.278 ms 209.85.248.95 (209.85.248.95)  27.982 ms 72.14.233.105 (72.14.233.105)  24.149 ms
 6  209.85.254.118 (209.85.254.118)  52.746 ms  36.047 ms 209.85.254.116 (209.85.254.116)  35.066 ms
 7  209.85.254.126 (209.85.254.126)  43.984 ms  35.821 ms  35.224 ms
 8  fx-in-f103.google.com (74.125.39.103)  27.832 ms  44.820 ms  32.654 ms
godzil@MacBook-Pro-de-MTR ~ $ 

Bien sur le résultat de traceroute peut-être différent, on est pas connecté au même endroit, par contre le résultat de dig *devrait* être similaire...

On as aussi nslookup qui est proche de dig :

nslookup www.google.com

godzil@MacBook-Pro-de-MTR ~ $ nslookup www.google.com
Server:		89.2.0.1
Address:	89.2.0.1#53

Non-authoritative answer:
www.google.com	canonical name = www.l.google.com.
Name:	www.l.google.com
Address: 74.125.39.147
Name:	www.l.google.com
Address: 74.125.39.99
Name:	www.l.google.com
Address: 74.125.39.104
Name:	www.l.google.com
Address: 74.125.39.103

godzil@MacBook-Pro-de-MTR ~ $ 

Ha aussi et un

cat /etc/resolv.conf

te donne quoi ?