Examples

iex> Domainatrex.parse("someone.com")
{:ok, %{domain: "someone", subdomain: "", tld: "com"}}

iex> Domainatrex.parse("blog.someone.id.au")
{:ok, %{domain: "someone", subdomain: "blog", tld: "id.au"}}

iex> Domainatrex.parse("zen.s3.amazonaws.com")
{:ok, %{domain: "amazonaws", subdomain: "zen.s3", tld: "com"}}