How does this actually Work, ie. how do you tell from someone's IP address which street they're on in which city, or whatever? (which seems to work only SOME of the time, over here (ANYWAY!).....)


Thanx.

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On Fri, 2020-03-27, groovee@cyberdude.com wrote:

How does this actually Work, ie. how do you tell from someone's IP
address which street they're on in which city, or whatever? (which
seems to work only SOME of the time, over here (ANYWAY!).....)

This seems like a good starting point: https://en.wikipedia.org/wiki/Geolocation_software

/Jorgen

--
// Jorgen Grahn <grahn@ Oo o. . .
\X/ snipabacken.se> O o .

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In article <c7479476-3be4-4a61-85e0-bfd3f29eb8d4@googlegroups.com>,
groovee@cyberdude.com wrote:

How does this actually Work, ie. how do you tell from someone's IP address which street they're on in which city, or whatever? (which seems to work only SOME of the time, over here (ANYWAY!).....)

Not very well. IP geolocation software usually thinks I'm in a city more
than 5 miles away.

--
Barry Margolin
Arlington, MA

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On 3/27/20 6:34 AM, groovee@cyberdude.com wrote:

How does this actually Work

There exist databases from allocation of addresses to service providers
which include the geographic coverage of the allocated address blocks.
My Linux systems have a package named GeoIP-GeoLite-data installed,
containing these databases. As well, there are command line tools in
GeoIP and C APIs available in GeoIP-devel.

Oftentimes, the result is quite wrong. I get 90+% of my Internet access
via AT&T hotspots. AT&T uses CGN (carrier-grade NAT), one effect of
which is that my apparent address as seen across the Internet depends on
where my connections through AT&T exit the AT&T network into other
providers. As a result, web searching for "what is my ip address" gives
me links to sites that are happy to tell me all about myself, among
which are their guesses for location; at the moment, depending on which
guess I read, they think I'm in either the Bronx, NYC, NY or Hartford,
CT. I'm actually northeast of Pittsburgh.

VPNs destroy geolocation. When I am traveling and using a VPS I rent,
running a VPN hub, the appearance is that I'm in Dallas. I haven't been physically in Dallas in decades.

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On 3/27/20 8:20 AM, Barry Margolin wrote:

Not very well. IP geolocation software usually thinks I'm in a city
more than 5 miles away.

I'd call that quite good.

5 miles away out of the ~12,000 from any point on the glob around the
the opposite side, that's quite good.

That's 99.959 % accurate.

Considering that GeoIP databases are primarily intended to identify the country, 5 miles seems spot on to me.

Considering the nature of how many GeoIP databases work in that they
associate a net block with an ISP, who can then dynamically assign IPs
therein to any of their customers, across town is about the best you can
get. (Assuming that the ISP uses different net blocks in different towns.)



--
Grant. . . .
unix || die

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In article <r5qo75$euj$1@tncsrv09.home.tnetconsulting.net>,
Grant Taylor <gtaylor@tnetconsulting.net> wrote:

On 3/27/20 8:20 AM, Barry Margolin wrote:

Not very well. IP geolocation software usually thinks I'm in a city
more than 5 miles away.

I'd call that quite good.

5 miles away out of the ~12,000 from any point on the glob around the
the opposite side, that's quite good.

That's 99.959 % accurate.

Considering that GeoIP databases are primarily intended to identify the country, 5 miles seems spot on to me.

But it's not like what you often see on TV, where they get a person's
exact address from their IP.

--
Barry Margolin
Arlington, MA

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On 3/30/20 7:57 AM, Barry Margolin wrote:

But it's not like what you often see on TV, where they get a person's
exact address from their IP.

Typically no.

Though it is possible in some situations to get service addresses for IP addresses if you go through a process, usually not involving a GeoIP
database. TL;DR: Go to the ISP providing / routing the static IP with
a court order and get the service address from them.

TV ~> Hollywood is not known for being accurate on things.



--
Grant. . . .
unix || die

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