网上查：
您的本机IP地址： 121.28.202.26
为什么和我在DOS下结果不同？
 
Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig/all

Windows IP Configuration

        Host Name . . . . . . . . . . . . : G011
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter 本地连接:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : RTL8168/RTL8136
        Physical Address. . . . . . . . . : 90-E6-BA-DB-0D-5C
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.1.11
        Subnet Mask . . . . . . . . . . . : 255.255.252.0
        Default Gateway . . . . . . . . . : 192.168.0.9
        DNS Servers . . . . . . . . . . . : 202.99.160.68
                                            222.222.222.222
                                            202.99.166.4
                                            219.150.32.132

C:\Documents and Settings\Administrator>

那就不能用命令查公网啦？