Redirect subdomain with www. Code without www is working (Wildcard)

Question

Now i have rule in .htaccess redirect ( wildcard is on ) many subdomains to other domain.

For example: subdomain123.domain.com --> other-domain.co.uk/subdomain123

but redirect with www don't work. For example: www.**subdomain123.domain.com --> other-domain.co.uk/subdomain123 - **404 error - please help with www.

RewriteCond %{http_host} .
RewriteCond %{http_host} !^domain.com [NC]
RewriteCond %{http_host} ^([^.]+)\.domain.com [NC]

RewriteRule ^(.*) http://other-domain.co.uk/%1 [R=301,L,QSA]

Answer 1

Try changing the condition to optionally match a "www":

RewriteCond %{http_host} .
RewriteCond %{http_host} !^domain.com [NC]
RewriteCond %{http_host} ^(www\.)?([^.]+)\.domain.com [NC]

RewriteRule ^(.*) http://other-domain.co.uk/%2 [R=301,L,QSA]