We offer this service only on the wsrv.nl domain, and we offer it as-is. However, if you want to use it under your own (sub)domain, please see this knowledge base article: Hosting-wsrv.nl-on-your-own-server

The goal of this service is reaching out to starting websites that don't have the skills nor resources to script and host something themselves. But we don't want to serve the whole internet, aside from the amount of traffic (we already handle millions of requests per hour, which is great), our opinion is that when sites grow, they probably want to host their own solution. This solution will probably integrate better with their site(s), and will offer many advantages we just can't.