change registry operator

art-records.md

@@ -68,7 +68,7 @@ The information below will be registered with the IANA according to section 8.1
 ```
 Extension identifier: artRecord
 
-Registry operator: CentralNic
+Registry operator: .ART
 
 Published specification: this document
 

platformNS.md

@@ -37,7 +37,7 @@ The members of the array are nameserver objects.
 ```
 Extension identifier: platformNS
 
-Registry operator: CentralNic
+Registry operator: Any
 
 Published specification: this document
 

regtype.md

@@ -28,7 +28,7 @@ The semantics of this value are server-specific and not currently defined.
 ```
 Extension identifier: regType
 
-Registry operator: CentralNic
+Registry operator: Any
 
 Published specification: this document