diff --git a/server/src/main/java/org/opensearch/index/mapper/IpFieldMapper.java b/server/src/main/java/org/opensearch/index/mapper/IpFieldMapper.java
index 1657e503a6347..21d88556c5458 100644
--- a/server/src/main/java/org/opensearch/index/mapper/IpFieldMapper.java
+++ b/server/src/main/java/org/opensearch/index/mapper/IpFieldMapper.java
@@ -482,6 +482,9 @@ public DocValueFormat docValueFormat(@Nullable String format, ZoneId timeZone) {
         }
     }
 
+    /**
+     * Union over IP address ranges
+     */
     public static class IpMultiRangeQueryBuilder extends MultiRangeQuery.Builder {
         public IpMultiRangeQueryBuilder(String field) {
             super(field, InetAddressPoint.BYTES, 1);