Linux查看www.sina.com的ip命令，ping好像不行

[root@localhost ~]# ping www.sina.com.cn
PING ara.sina.com.cn (58.63.236.50) 56(84) bytes of data.
64 bytes from 58.63.236.50: icmp_seq=1 ttl=55 time=26.8 ms
64 bytes from 58.63.236.50: icmp_seq=2 ttl=55 time=27.3 ms
64 bytes from 58.63.236.50: icmp_seq=3 ttl=55 time=54.5 ms
64 bytes from 58.63.236.50: icmp_seq=4 ttl=55 time=27.6 ms
64 bytes from 58.63.236.50: icmp_seq=5 ttl=55 time=26.4 ms

--- ara.sina.com.cn ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4000ms
rtt min/avg/max/mdev = 26.460/32.552/54.523/10.994 ms
[root@localhost ~]#

58.63.236.50就是新浪的地址

通过dns有3中方法
1 host www.sina.com
2 nslookup www.sina.com
3 dig www.sina.com

ping -a www.sina.com或ping -s www.sina.com试试
我现在把linux系统删了，也无法帮你验证。