Subscribers to premium features (except for SSL encryption) can set a custom domain for their wiki. For example, wiki.yourcompany.com
Wiki administrators can configure this on the Settings > Branding page. It will also require your network (or domain) administrator to add a CNAME DNS record to point your new custom domain to the original clearwiki URL. For example the CNAME record will alias wiki.yourcompany.com to yourcompany.clearwiki.com. If you subscribe to SSL encryption for your wiki, this process cannot be automated quite so easily. If you would like to have a custom domain and subscribe to SSL please contact support@clearwiki.com.

ClearWiki Support Admin