Why does my sisters computer have the same IP address as my computer?

Answer 1

Simple they don't
Your on the same router so the "outside" world sees only one
The seperate ips are assigned internally by the router but only you can see them
to see them
Start> Run> type cmd click ok then type ipconfig /all

Answer 2

My initial thought is you and/or your sister's computer(s) are using a set IP address instead of a dynamic IP address, used from within a range set on your router & computer.

To do a quick check on the IP's on your computer, click on your Start Menu, then click Run... and type in 'cmd' without the quotations. in your DOS pop-up window, type the command "ipconfig/all" without the quotations.

You can also check your static/dynamic IP address settings by doing the following:

click Start
hover over Connect To, then click on Show All connections.
Right click on your connection icon, and left click on Properties.
Go to your advanced Tab, and there you will be able to see if you have "Assign an IP address automatically". if you've selected this for both computers, this should resolve your IP address conflicts. If not, check the IP address ranges in both computers and your router to see if your range is adequate enough to accomodate both computers. Good Luck!

Answer 3

A couple possibilities on this one. It is possible you restarted your router and one of the computers retained the dynamic IP address it had before the router restart. This is not an uncommon thing to have happen, and is usually resolved by either restarting the computer (easiest) or releasing and renewing the IP address.

Alternately, one or both of the computers has a static IP address configured. This is an unlikely cause, but is possible. How you check this will vary by operating system. If one or both has a static IP address, that means that the dynamic distribution is unaware that the IP is in use and it can hand it out to a client computer at any time.

Answer 4

Do you mean router IP address or actual IP address. A router IP address is different for each computer. Your main IP address that is given to you when you access the internet is the same when two people are online at the same time.

Answer 5

are you both plugged into the same internet? couldnt really be the case.

if your in diffrent places that perfectly logical

there is a thing in a router (and some switches) called a DHCP. when your computer turns on it requests and address from the DHCP. most routers for homes use the 192.168.0.100 or 192.168.1.100 type number and count from 100 to 150 as the last set of numbers. so if you both have a linksys and live in diffrent places only have one computer it will be the case you will prob ahve the same address.

thats a Local address not and internet address. so its ok.

other wise you or her might have a static (which is not DHCP)

Answer 6

It is probably because both computers are connected to the internet by a router.

You can use a proxy (google it) if you want to use a different IP address when surfing the net.

Answer 7

It depends on were you are looking at the IP address. If its somewere on the web then I would have to guess its because you are using a router and it makes the multiple connections on your side of the router look like one connection on the web.

Answer 8

u probs using a router and the internet going down same connection ur pcs will have diffrent network ips but same internet ip since u both connect to same internet provider servers

Answer 9

IP stands for Internet Provider, do you have the same internet provider?

Answer 10

possibley your sharing the same internet connection?..