There’s quite a bit more overhead to using the [Public Suffix List](http://mxr.mozilla.org/mozilla-central/source/netwerk/dns/src/effective_tld_names.dat?raw=1), both in terms of administration (e.g., keeping up to date with changes to the list) and performance (compared to the current method in plugins/Provider/Provider.php).

```
private function getCleanHostname($hostname)
{
$extToExclude = array(
‘com’, ‘net’, ‘org’, ‘co’
);
```

Attached patch uses Toby Inkster’s GPL’d code, found at http://tobyinkster.co.uk/blog/2007/07/19/php-domain-class/

overhead of using this class and the .dat list is quite big, and we really want to keep execution of piwik.php optimal. It would be disabled by default. However i think the best in this case might be to provide a plugin to do this advanced check. vipsoft, maybe you could add a hook in the getCleanHostname that would load the hostname from a plugin if hook is listened, or default to the normal simple algorithm. Creating the plugin from your existing patch will be easy. Does it make sense?

I should have done that the first time. ;)

(In [1750]) refs #558 - add Provider.getCleanHostname hook

(In [1753]) fixes #558 - plugin to use Public Suffix List to enhance Provider report; the register-domain-libs contains a PHP data structure to represent the contents of effective_tld_names.dat -- this loads and executes much faster (and can be opcode cached) than the implementation using Domain.class.php

(In [refs #558, revert 1753), remove PublicSuffix plugin from core per matt's review

(In [refs #558, revert 1753), move these lines back to top per matt's review

Attachment: 2010.01.08 update of Public Suffix List
ActiveProvider.zip

Attachment: 2011-03-01 update of Public Suffix List
ActiveProvider-1.2.1.zip