As far as supported by the registries themselves, a registration of IDNs is also possible through the registrar system. CPS-Datensysteme has offered IDNs since its introduction through the registry operator Verisign Inc. The following IDNs are possible: .com, .net and .org. A later stipulation of a binding standard by the ICANN helped the general acceptance of IDNs. The DENIC eG is also associated with the circulation of IDNs and since March 1, 2004 enables the registration of so-called "umlaut domains".