blocking a country's or ISP's IP address

[nhasian]

last week my shopping cart started getting fraudulent credit card orders. the bill to & ship to addresses are always in the US, however the credit card numbers are always different. looks like this hacker always comes to my website from www.google.com.ng so far the IP addresses I've blocked are:

41.219.200.245
41.219.225.108
41.219.230.209

See the common pattern? Should I just block 41.219.*.* ? How can I see what countries or ISPs it will affect? according to http://www.ip-adress.com/ip_tracer/ all of those IPs belong to Starcomms Nigeria.
Is it possible to block the entire country of Nigeria? Or just that particular ISP? Please advise.

[lovinglinux]

Use moblock with a country ip list.

[Soul-Sing]

: http://iplist.sourceforge.net/start.html
iplist blocks ip-ranges and countries.

[Sarmacid]

I'd suggest taking a different approach than blocking all of those IPs. If the stuff is being mailed to the US then it's very likely the attacker is just using proxy servers, and if that country is banned, he'll move on to the next one.

[nhasian]

I would be happy to block anonymous proxy servers as well.

[lovinglinux]

I would be happy to block anonymous proxy servers as well.

http://iblocklist.com/list.php?list=bt_proxy

Other lists http://iblocklist.com/lists.php

[Lars Noodén]

last week my shopping cart started getting fraudulent credit card orders. the bill to & ship to addresses are always in the US, however the credit card numbers are always different. looks like this hacker always comes to my website from www.google.com.ng so far the IP addresses I've blocked are:

41.219.200.245
41.219.225.108
41.219.230.209

See the common pattern?

You can block the range. Find the range with whois

$ whois 41.219.200.245;
...
inetnum: 41.219.225.0 - 41.219.225.255
...

There's a contact there to lodge a complaint with.