Regex Subdomain routing, KO3.1

// API
Route::set('api', '(<action>(/<subaction>))')
	->defaults(array(
		'subdomain'	 => 'api', // api.domain.com
		'controller'	 => 'api',
		'action'	 => 'index',
	));

// Load the website
Route::set('welcome', '(<action>(/<subaction>))')
	->defaults(array(
		'subdomain'	 => 'www|^$', // www.domain.com or domain.com
		'controller' 	 => 'welcome',
		'action'	 => 'index',
	));

// Load a members account based on subdomain
Route::set('members', '(<action>(/<id>))')
	->defaults(array(
		'subdomain' 	 => '^.+(?<!www|api)$', // anything but www.domain.com, api.domain.com or domain.com (reserved names)
		'controller'	 => 'members',
		'action'    	 => 'index',
	));

// Catch all
Route::set('default', '(<controller>(/<action>(/<id>)))')
	->defaults(array(
		'subdomain' 	 => false, // no subdomain at all
		'controller'	 => 'welcome',
		'action'    	 => 'index',
	));