比如要封www.ttsou.cn，有两种方法可以得到该网址对应的IP地址，第一是ping该网址，如下所示：
C:\>ping www.ttsou.cn
Pinging www.ttsou.cn [58.61.155.44] with 32 bytes of data:
Reply from 58.61.155.44: bytes=32 time=80ms TTL=116
Reply from 58.61.155.44: bytes=32 time=78ms TTL=116
Reply from 58.61.155.44: bytes=32 time=92ms TTL=116
Reply from 58.61.155.44: bytes=32 time=85ms TTL=116
Ping statistics for 58.61.155.44:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 78ms, Maximum = 92ms, Average = 83ms |
从中我们可以得到www.ttsou.cn对应的IP地址为58.61.155.44.但是这种方法存在一个缺陷，即如果该网址对应有多个IP地址的话，用ping的方法不可能得到所有对应的IP地址，我们可以用nslookup来解决，如下所示：
C:\>nslookup
Default Server: ns.jncatv.net
Address: 222.175.169.91
> www.ttsou.cn
Server: ns.jncatv.net
Address: 222.175.169.91
Non-authoritative answer:
Name: www.ttsou.cn
Address: 58.61.155.44
> www.sina.com.cn
Server: ns.jncatv.net
Address: 222.175.169.91
Non-authoritative answer:
Name: hydra.sina.com.cn
Addresses: 218.30.108.58, 218.30.108.59, 218.30.108.61, 218.30.108.62
218.30.108.64, 218.30.108.65, 218.30.108.66, 218.30.108.67, 218.30.108.68
218.30.108.69, 218.30.108.72, 218.30.108.73, 218.30.108.74, 218.30.108.55
218.30.108.56, 218.30.108.57
Aliases: www.sina.com.cn, jupiter.sina.com.cn |
从以上的结果我们可以看出，www.ttsou.cn确实是只对应了一个IP地址，但是象www.sina.com.cn这样的网址就对应了大量的IP地址。
责任编辑：cyth
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