Identifying location based on IP address

If someone has my mobile phone's IP address, are they able to identify my location? I

If so, how?
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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
IP addresses are usually assigned to an area by ISPs, but the geolocation might not be public available. So the ISP is probably able to locate rather precisely where you are - but as you are on mobile, there are better ways to do that. Mobile radio cell info is available and much more reliable and precise.

Others can use the IP address and try to get some location info, like greater area, down to a town maybe. You can try different free or paid services for that, and they will be no more precise than the IP of your home internet router.
And if you move, you might keep your IP even if leaving the assigned area, which makes it even less correct.

However, if someone is able to combine different info  - like Google, e.g. because you just searched the next restaurant  -,  location get more precise. The best result is, of course, if someone gets your GPS plus surrounding WLAN plus IP address plus other data. And that info is getting collected.

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JohnBusiness Consultant (Owner)Commented:
At the 95% level, the answer is easy: No.
The information is available through your cell provider, but that isn't generally accessible to us.  Law enforcement agencies are able to do it but only with the cooperation of the cell providers.  The rest of us can't get any closer than what Qlemo suggested.
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JohnBusiness Consultant (Owner)Commented:
I was overseas with my phone on a low cost roaming plan. No one knew unless I told them.
alexwhite19800Author Commented:
Thanks all. I should have quantified my question somewhat.

With our Mobile Device Management solution, it's possible to identify the IP address of a mobile phone. There is some concern that this will lead to privacy issues and allow people to locate our staff.

I'm not referring to the carrier's ability, more an IT administrator.

I looked up a few websites and they seem to be able to roughly match my location (to the closest city for example), how does this work? Example site;
JohnBusiness Consultant (Owner)Commented:
In a "local" area, the IP address comes from the carrier. In my case this could be a radius of over 100 miles.  No one but police could ever locate me. The over 100 miles encompasses numerous cities and towns.

What is my IP that you pointed to tells me (or you) that I am in Mississauga. This is true right now and is on a computer lashed to my ISP.

My phone does NOT have that IP and is sitting next to me on cellular.

I suggest the overall concern is not altogether valid.
JohnBusiness Consultant (Owner)Commented:
So I did not move. I remain sitting at my kitchen table and my ThinkPad is still running (not restarted).

I plugged in my HUAWEI internet card and What is my IP now says Toronto 25 miles away (depending on where you are). It will also say Toronto if I move this whole arrangement to my cottage (which I have done.

Telling someone the device they are lookin for is somewhere in 800 square miles amongst 2 million people and a million buildings is not really very accurate or useful.

I know I may sound uncaring, but I think the current thinking that anyone can find you (you are not the only person to post this) is heavily overblown.
alexwhite19800Author Commented:
Sure, I get it, I'm just trying to understand how sites like WhatismyIP work.

I plug in an IP address into the site and it does what exactly?
JohnBusiness Consultant (Owner)Commented:
I traced What is my IP with two different connections and they just point to the site of the Internet (Rogers in my case). They say nothing about where the computer is.
alexwhite19800Author Commented:
Sorry, I meant where does WhatsmyIP get its information from?
JohnBusiness Consultant (Owner)Commented:
An IP address can be traced by detailed WHOIS (any number of tools) to who owns the IP address.

It goes here: and returns the ISP area that holds that IP range.
JohnBusiness Consultant (Owner)Commented:
So if I go to Whois, I get

Rogers Cable Communications Inc. ROGERS-CAB-99 (NET-99-224-0-0-1) -
Rogers Cable Inc. WLFDLE HSI (NET-99-229-38-0-1) -

Those will come out to two different addresses, one in Toronto and one in Mississauga.
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
As said above, the public databases are based on IP address range reservations and the assignment to companies. The location is more or less accurate, and can be totally off (big ISPs, for example, may have allocated a big subnet and divide that as they see fit).

Also as said, tracking an IP address is useless - there is no relation between IP address and mobile phone. The IMEI is the only really identifying number.
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