301 domain name URL variants for canonicalization question in htaccess?

[esiow2013]

#1

RewriteCond %{HTTP_HOST} ^xyz.com [NC]

RewriteRule ^(.*)$ http://www.xyz.com/$1 [L,R=301]

What I want to do here is to redirect URLs that have omitted the “www.” prefix to the full “www.xyz.com” home page URL. That means the home page URL http://xyz.com will not resolve on its own, but instead will redirect to http://www.xyz.com (without trailing slash).

#2

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /([^/]+/)*(default|index).(html|php|htm)\ HTTP/ [NC]

RewriteRule ^(([^/]+/)*)(default|main|index).(html|php|htm)$ http://www.xyz.com/$1 [L,R=301]

What I want to do here is to ensure that any home page URL that includes several versions of explicit page name references, such as default.htm or index.html, will be redirected to the canonical home page URL, http://www.xyz.com (without trailing slash).

Are the rewrite rules correct? Thanks in advance!

[MikeTek]

I've tested both and the logic looks fine.

However, as always with .htaccess changes, I'd recommend testing to verify this has been set up properly once you roll these out (easy enough with a quick ping / page load).