Hypens in domain name of .htaccess rewrite

Question

the following doesn't work in my .htaccess file... Does it have something to do with the hyphen in the domain name?

RewriteEngine on

RewriteCond %{HTTP_HOST} ^(www.)?.*.domain-name.com$ [NC]
RewriteCond %{REQUEST_URI} !^/Accounts/2/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /Accounts/2/$1 [L]
RewriteCond %{HTTP_HOST} ^(www.)?.*.domain-name.com$ [NC]
RewriteRule ^(/)?$ Accounts/2/ [L]

any ideas?