IP address for UK

[Chris M]

How do I find out the range of IP addresses which covers the UK? Thanks!

 

[Oli Filth]

How do I find out the range of IP addresses which covers the UK? Thanks!

IP address values aren't based on geography. There is no specific range
that covers the UK. Why do you need to know?

If you're trying to find the ISP of a user for instance, a better way
might be to do a DNS lookup on the ISP address and see if the URL
contains "uk". (Just a guess).

 

[Richard]

Chris wrote on Tue, 04 Jan 2005 18:39:05 GMT:

How do I find out the range of IP addresses which covers the UK? Thanks!

Try this nifty little porgram. Written by a guy from icann.

http://www.irnis.net/soft/xipl/

In the IP locator bar, enter 82.0.0.0 then press locate.
This will give a whole slew of IP's for the UK.

 

[Richard]

Oli wrote on Wed, 05 Jan 2005 00:22:32 GMT:

Chris M wrote:

??>> How do I find out the range of IP addresses which covers the UK?
??>> Thanks!

IP address values aren't based on geography. There is no specific range
that covers the UK. Why do you need to know?

If you're trying to find the ISP of a user for instance, a better way
might be to do a DNS lookup on the ISP address and see if the URL
contains "uk". (Just a guess).

Yes they are country specific.
My IP starts with 64.x.x.x
That IP range only by USA cable companies.
A small country like Tuvalu, or Andorra, probably won't get any more than
one block assigned to them.
A block being in the range of X.0.0.0 to X.0.0.255.
With xipl IP locaotor you can see which countries are assinged which blocks.

http://www.irnis.net/soft/xipl/

 

[Roy Schestowitz]

How do I find out the range of IP addresses which covers the UK? Thanks!

I would like to add to the mix a reverse DNS lookup service that I use apart
from http://www.arin.net/:

http://remote.12dt.com/rns/

Unlike others, it is light.

 

[Oli Filth]

Oli wrote on Wed, 05 Jan 2005 00:22:32 GMT:



??>> How do I find out the range of IP addresses which covers the UK?
??>> Thanks!




Yes they are country specific.

No.

 

[Toby Inkster]

If you're trying to find the ISP of a user for instance, a better way
might be to do a DNS lookup on the ISP address and see if the URL
contains "uk". (Just a guess).

AOL is the UK's second largest ISP with about 2.5 megausers. Reverse DNS
yields ".com", not ".uk". BTopenworld (.com) is also a big one.

Better to use RIPE's <http://www.ripe.net/> database to find the country
associated with the IP address.

 

[Hywel Jenkins]

AOL is the UK's second largest ISP with about 2.5 megausers.

Is a "megauser" someone like Rick Waller, or is it one million smaller
people?

 

[Andy Dingley]

How do I find out the range of IP addresses which covers the UK?

You don't. It's either not a good thing to do, or it can't be done
well enough.

As a rough guide, it's quite easy to take a list of allocated IP space
for some "well known" ISPs, and to do a look-up based on this list.
It's still dubious though - Apart from the obvious AOL, there are
issues like Demon's Dutch connection, or any ongoing influence of
Wanadoo's takeover. So for a small set of IPs you can do this, and
reasonably well, but it's not a particularly large fraction of
potential incoming IPs.

For commercial desktops, it's even worse. Small businesses will
generally be using these same "retail" ISPs (see above). Others though
will be multinationals who could be coming from anywhere, yet will
probably be using space from the Class B their NY head office
registered decades ago.

Then there are phones, wireless hotspots and roaming dial-in
agreements.

Doing a reverse loookup is possible, but this is a time-consuming
operation and it can whack your server load up enormously if you're
not careful. It still doesn't work for many of the reasons given.


If you really care about proving location, then you just can't do it
from IP address. Legal opinion (that I paid real money for, admittedly
some years ago) was that the attempt to do this could be seen as
accepting some liability for actually getting it right - and that the
site could be on dubious legal ground if it was important to get this
location right , and IP address was the only mechanism.

If you're shipping swastikas to Europe-except-Germany, then you will
probably find that IP address isn't going to meet your needs. Trying
to deal with Saudi Arabia or China is actually easier, as you can
treat this as recognising a much smaller set of "known" proxies and
bar everything else.

If you care, there are commercial services that offer geographical
lookup from IP, and they try to keep their lookups fast and current.
They're still much less than perfect though.

 

[Toby Inkster]

Is a "megauser" someone like Rick Waller, or is it one million smaller
people?

It's TIC for a million users.