Contact State / Province (sp) Policy

[james-f-gould]

Patrick Mevzek comment on the REGEXT mailing list (https://mailarchive.ietf.org/arch/msg/regext/l1x3ods6hGkdA9fi2yOqqI9WdCc):

• contact:sp : one registry has this rule "if the contact is in country X - the registry country - then
  the should be the 2 letters code of the nation provinces", that is not free form.

Jim Gould's reply to comment on the REGEXT mailing list:

That would be really difficult to communicate declaratively if the rule is derived from the value of a different element (e.g,. contact:cc). So, this policy only applies if the contact:cc matches the country code of the registry?

I believe this is best handled via a server-specific policy extension, since it is unique and will lead to undue complexity in defining a generic solution.

[james-f-gould]

Providing a specific encoding scheme for the state / province only when the contact country code matches the registry, is something very specific. My recommendation is for the registry with this unique policy to create a server-specific policy extension to formally define the list of acceptable contact:sp values based on a given country:cc value. I'm going to close this issue for now.