Contact information listed in a WHOIS record.
@type t() :: %Whois.Contact{ city: String.t() | nil, country: String.t() | nil, email: String.t() | nil, fax: String.t() | nil, name: String.t() | nil, organization: String.t() | nil, phone: String.t() | nil, state: String.t() | nil, street: String.t() | nil, zip: String.t() | nil }