IP address

[Tweed]

When I go to various web pages in order to find my IP address (e.g. www.whatismyipaddress.com), they all give the same number. Though when I type

ipconfig -all

into a command prompt, the IP address listed there is completely different. Can anyone shed any light on this?

Ta

[LKHNET]

Firstly, are you behind a router or a proxy?

When you're behind a router, or a proxy, you use a local IP, such as 192.xxx.xxx.xxx or 169.xxx.xxx.xxx

When you go to whatismyip.com you will be given your external IP. You won't be shown your external IP in IPCONFIG, only your internal IP.
I can't really give any more info on this subject. Shed some more light, how do you connection to the Internet? What is your ISP etc.

[Tweed]

That explains it. Its my ISPs IP address I get on whatismyip.com. Thanks

 

[phl666]

i think the ip address you get from whatsmyipaddress is that of the router, not your ISP

[Tweed]

...yes, but it's my ISPs router, isn't it?

[j2buttonsw]

Computers communicate with each other using a language -or protocol- called TCP/IP. A prerequisite of this protocol is each machine must have a unique IP address. The IP address is comprised of four blocks of 8 bits or, in terms of base 10, numbers that start from 0.0.0.0 to 255.255.255.255 As can be seen there are a limited number of IP addresses (I know I have left out sub-netting for the ease of explanation). If all networks in the whole world had machines that had a unique IP address there would only be a small number of possible networks. Then the idea of public and private IP addresses came into being. Certain IP address ranges (eg 10.0.0.0 to 10.255.255.255 and 192.168.0.0 to 192.168.255.255 and 172.16.0.0 to 172.31.255.255) were designated as private and were only used on private networks. There was another range (169.254.0.0 to 169.254.255.255) that was reserved for auto-configuration when a DHCP server is not found. The rest are public and is the basis of the internet. The idea being that a large company network may have thousands of computers on their private network yet only one public IP address so they can contact the outside world. No-one can "see" a private IP address from the internet as the internet's routers will not allow private network traffic across them. These big companies need a system to translate traffic destined to the internet from private IP addresses to the one public IP address. This is called Network Address Translation (NAT) and is the basis of most internet routers. You have an internet service provider (ISP) which will "loan" you a public IP address and rent you bandwidth to allow you to communicate with the rent of the world. The ipconfig will tell you the IP information of the network adapters on your computers. If you connect via a modem it will tell you the IP address the ISP has lent you...

[j2buttonsw]

If you use a router it will tell you the private IP address the router has given you which will be different from the public IP address the router has from your ISP. Here endeth the lesson

[Tweed]

Thanks everyone

[Tejaa]

I used this site http://www.ip-details.com/ip-search/ for finding my Pc IP address ..
Make use of this site for finding the Ip address ..
It provides information at free cost .. Media URL: http://www.ip-details.com/ip-search/
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