Hi,
Although it's always a good idea to be prepared for set-backs the advantage of listing IP addresses is limited. Here's why:
When 'they' start messing with the internet it's not likely they will target the DNS services, it's far too simple and there is a more
sophisticated way to mess up without leaving traces to the root cause.
Then there is a more detailed problem concerning IP's ...
The internet currently uses IPv4 which consists of 4 bytes displayed as 4 numbers with values between 0 .. 255 separated by dots.
The problem with IPv4 is that there are far more addresses needed than combinations available. That's why IPv6 will soon replace
IPv4. IPv6 consists of 16 bytes, resulting in a lot more combinations.
The way it is handled currently is that most websites do NOT have a unique IP address. The way they share their IP with others is
that the IP will lead to the right server and the domain name used resolves the rest.
When websites have an application running in https (encrypted http) they require an unique IP for the encryption certificate.
Also when websites are that big that they run on a dedicated server (or even servers) it's likely that they will have a unique IP.
So that's why in general it may not work when you use the IP directly ...
If you still want to lookup IP addresses you can go here:
http://ip-lookup.net/domain.php
Fill in only the part after
http://www. till the next /
E.g. in
http://www.tbrnews.org/Archives/a3005.htm lookup tbrnews.org
Sometimes somethings else is used on the place of www
Have fun ...