or download this
Only hosts within the specified domain can set a cookie for a domain a
+nd domains must have at least two (2) or three (3) periods in them to
+ prevent domains of the form: ".com", ".edu", and "va.us". Any domain
+ that fails within one of the seven special top level domains listed
+below only require two periods. Any other domain requires at least th
+ree. The seven special top level domains are: "COM", "EDU", "NET", "O
+RG", "GOV", "MIL", and "INT".