The term "dotless domain" usually refers to top-level domains (TLDs) – think com, gov, etc – that are reachable themselves using a web browser or email server. That is, they are working domains that consist of a single label: http://com/, as opposed to http://example.com/; or contact@gov, as opposed to [email protected]. This can happen if the domain's DNS zone contains A/AAAA or MX records in its apex.[1] Both the ICANN and the IAB are notoriously against the practice,[1][2] so ICANN prohibits ...