 The U.S. X.500 was privatized in 1998, when the U.S. Government no longer offered X.500 or DNS registration outside of known government agencies.The X.500 pilot project has been in development in the commercial space, and the technology continues to be present in major installations of millions of users within corporate data centers, and within the U.S. Government for credentialing.The authors of RFC 2693 (concerning SPKI) note that "The original X.500 plan is unlikely ever to come to fruition.