diff --git a/src/ontology/ro-idranges.owl b/src/ontology/ro-idranges.owl
index bd4f0128..96ff7352 100644
--- a/src/ontology/ro-idranges.owl
+++ b/src/ontology/ro-idranges.owl
@@ -114,4 +114,8 @@ EquivalentTo: xsd:integer[> 17500 , <= 18000]
 
 Datatype: idrange:26
 Annotations: allocatedto: "Aleix Puig"
-EquivalentTo: xsd:integer[> 20100 , <= 20200]
\ No newline at end of file
+EquivalentTo: xsd:integer[> 20100 , <= 20200]
+
+Datatype: idrange:27
+Annotations: allocatedto: "Ray Stefancsik"
+EquivalentTo: xsd:integer[> 20201 , <= 20300]