examples at http://publicsuffix.org/.
That website previously listed pvt.k12.wy.us, but that was an error,
as confirmed by correspondance with submissions@publicsuffix.org, and
the website was fixed on 2013-01-23.
R=adg
CC=dr.volker.dobler, golang-dev
https://golang.org/cl/
7241053
// PublicSuffixList provides the public suffix of a domain. For example:
// - the public suffix of "example.com" is "com",
// - the public suffix of "foo1.foo2.foo3.co.uk" is "co.uk", and
-// - the public suffix of "bar.pvt.k12.wy.us" is "pvt.k12.wy.us".
+// - the public suffix of "bar.pvt.k12.ma.us" is "pvt.k12.ma.us".
//
// Implementations of PublicSuffixList must be safe for concurrent use by
// multiple goroutines.