FROM RFC 2606 To reduce the likelihood of conflict and confusion, a few top level domain names are reserved for use in private testing, as examples in documentation, and the like. In addition, a few second level domain names reserved for use as examples are documented. Top Level Domains Reference ----------------- --------- .test [RFC2606] .example [RFC2606] .invalid [RFC2606] .localhost [RFC2606] Second Level Domains Reference -------------------- --------- example.com [RFC2606] example.net [RFC2606] example.org [RFC2606] References ---------- [RFC2606] Eastlake, D., and A. Panitz, "Reserved Top Level DNS Names", RFC 2606, June 1999.