Note: this page is part of the
'hello-dns' documentation effort.
Non-IETF DNS standards
RPZ:
Response Policy Zone is a framework for blocking, dropping queries or
spoofing responses based on domain names, response IP addresses or
nameservers used during resolution. It has long lived as an ISC Technical
Note, and failed to become an IETF standard. It is nevertheless very
useful, and there is an industry of RPZ providers. Policies are described
by zones and are typically transmitted over IXFR.