namespace URI,Application File,Registrant Contact,Optional Reference
urn:ietf:params:xml:ns:EmergencyCallData,/assignments/xml-registry/schema/EmergencyCallData.xsd,,[RFC7852]
urn:ietf:params:xml:ns:pidf:geopriv10:dataProvider,/assignments/xml-registry/schema/pidf/geopriv10/dataProvider.xsd,[Nabbot],[RFC4119]