] Ultimately, many of the issues with domain names arise as
] the result of efforts to use the DNS as a directory.
] While, at the time this document was written, sufficient
] pressure or demand had not occurred to justify a change,
] it was already quite clear that, as a directory system,
] the DNS is a good deal less than ideal. This document
] suggests that there actually is a requirement for a
] directory system, and that the right solution to a
] searchable system requirement is a searchable system, not
] a series of DNS patches, kludges, or workarounds.

RFC3467: Role of the DNS