E:\>ipconfig Windows IP Configuration Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Ethernet adapter Wireless Network Connection: Media State . . . . . . . . . . . : Media disconnected PPP adapter GP-INTERNET: Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 10.130.20.120 Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 10.130.20.120
If you are not aware about Private and Public IP address then a little discussion about IP Address will help you to understand the thins.
Internet Protocol (IP) Address is a numerical label that is assigned to a device in order to uniquely identify in a network/Internet. In the Internet Protocol Version 4 (IPV4) the designers of TCP/IP defined an IP address as a 32-bit number which limits the address space to 4,294,967,296 (2 to the power 32) possible unique addresses. Out of 4,294,967,296 IP Addresses some addresses are reserved such as private networks (~18 million addresses) or multicast addresses (~270 million addresses).
The addresses which are reserved for private networks are called Private IP Address and rest addresses are called Public IP Address. Following is the range of all IP Address exists in IPV4.
From the above list following is the range of Private IP Address,
So, 10.130.20.120 is my private IP Address and as Private IP addresses are not routed on the Internet and thus their use need not be coordinated with an IP address registry so to communicate with Internet there must have a Public IP address. There are many websites through which you can check your IP Address along with many features. From them, I see AnalyzeMy really helps me which much more information.