diff --git a/sdk/storage/azure-storage-blobs/CHANGELOG.md b/sdk/storage/azure-storage-blobs/CHANGELOG.md
index 4a4817d92..91b8bd883 100644
--- a/sdk/storage/azure-storage-blobs/CHANGELOG.md
+++ b/sdk/storage/azure-storage-blobs/CHANGELOG.md
@@ -7,6 +7,8 @@
 - Renamed `HasMorePages()` in paged response to `HasPage()`.
 - Default chunk size for concurrent upload was changed to nullable.
 - `BlobLeaseClient::Change()` updates internal lease id.
+- Removed `ContentType` from `GetBlockListResult`.
+- Moved `GetPageRangesResult` to detail namespace.
 
 ## 12.0.0-beta.10 (2021-04-16)
 
diff --git a/sdk/storage/azure-storage-blobs/inc/azure/storage/blobs/protocol/blob_rest_client.hpp b/sdk/storage/azure-storage-blobs/inc/azure/storage/blobs/protocol/blob_rest_client.hpp
index de8e27ad4..fc447aa1a 100644
--- a/sdk/storage/azure-storage-blobs/inc/azure/storage/blobs/protocol/blob_rest_client.hpp
+++ b/sdk/storage/azure-storage-blobs/inc/azure/storage/blobs/protocol/blob_rest_client.hpp
@@ -1831,7 +1831,6 @@ namespace Azure { namespace Storage { namespace Blobs {
        * blob.
        */
       Azure::DateTime LastModified;
-      std::string ContentType;
       /**
        * Size of the blob.
        */
@@ -1846,26 +1845,6 @@ namespace Azure { namespace Storage { namespace Blobs {
       std::vector<BlobBlock> UncommittedBlocks;
     }; // struct GetBlockListResult
 
-    struct GetPageRangesResult
-    {
-      /**
-       * The ETag contains a value that you can use to perform operations conditionally.
-       */
-      Azure::ETag ETag;
-      /**
-       * The date and time the container was last modified. Any operation that modifies the blob,
-       * including an update of the metadata or properties, changes the last-modified time of the
-       * blob.
-       */
-      Azure::DateTime LastModified;
-      /**
-       * Size of the blob.
-       */
-      int64_t BlobSize = 0;
-      std::vector<Azure::Core::Http::HttpRange> PageRanges;
-      std::vector<Azure::Core::Http::HttpRange> ClearRanges;
-    }; // struct GetPageRangesResult
-
     enum class ListBlobContainersIncludeFlags
     {
       /**
@@ -2515,6 +2494,28 @@ namespace Azure { namespace Storage { namespace Blobs {
       }; // struct GetBlobTagsResult
     } // namespace _detail
 
+    namespace _detail {
+      struct GetPageRangesResult
+      {
+        /**
+         * The ETag contains a value that you can use to perform operations conditionally.
+         */
+        Azure::ETag ETag;
+        /**
+         * The date and time the container was last modified. Any operation that modifies the blob,
+         * including an update of the metadata or properties, changes the last-modified time of the
+         * blob.
+         */
+        Azure::DateTime LastModified;
+        /**
+         * Size of the blob.
+         */
+        int64_t BlobSize = 0;
+        std::vector<Azure::Core::Http::HttpRange> PageRanges;
+        std::vector<Azure::Core::Http::HttpRange> ClearRanges;
+      }; // struct GetPageRangesResult
+    } // namespace _detail
+
     namespace _detail {
       struct ListBlobContainersResult
       {
@@ -8965,7 +8966,6 @@ namespace Azure { namespace Storage { namespace Blobs {
           response.ETag = Azure::ETag(httpResponse.GetHeaders().at("etag"));
           response.LastModified = Azure::DateTime::Parse(
               httpResponse.GetHeaders().at("last-modified"), Azure::DateTime::DateFormat::Rfc1123);
-          response.ContentType = httpResponse.GetHeaders().at("content-type");
           response.BlobSize = std::stoll(httpResponse.GetHeaders().at("x-ms-blob-content-length"));
           return Azure::Response<GetBlockListResult>(std::move(response), std::move(pHttpResponse));
         }
@@ -9917,7 +9917,7 @@ namespace Azure { namespace Storage { namespace Blobs {
           Azure::Nullable<std::string> IfTags;
         }; // struct GetPageBlobPageRangesOptions
 
-        static Azure::Response<GetPageRangesResult> GetPageRanges(
+        static Azure::Response<Models::_detail::GetPageRangesResult> GetPageRanges(
             Azure::Core::Http::_internal::HttpPipeline& pipeline,
             const Azure::Core::Url& url,
             const GetPageBlobPageRangesOptions& options,
@@ -9982,7 +9982,7 @@ namespace Azure { namespace Storage { namespace Blobs {
           }
           auto pHttpResponse = pipeline.Send(request, context);
           Azure::Core::Http::RawResponse& httpResponse = *pHttpResponse;
-          GetPageRangesResult response;
+          Models::_detail::GetPageRangesResult response;
           auto http_status_code
               = static_cast<std::underlying_type<Azure::Core::Http::HttpStatusCode>::type>(
                   httpResponse.GetStatusCode());
@@ -9994,13 +9994,13 @@ namespace Azure { namespace Storage { namespace Blobs {
             const auto& httpResponseBody = httpResponse.GetBody();
             _internal::XmlReader reader(
                 reinterpret_cast<const char*>(httpResponseBody.data()), httpResponseBody.size());
-            response = GetPageRangesResultFromXml(reader);
+            response = GetPageRangesResultInternalFromXml(reader);
           }
           response.ETag = Azure::ETag(httpResponse.GetHeaders().at("etag"));
           response.LastModified = Azure::DateTime::Parse(
               httpResponse.GetHeaders().at("last-modified"), Azure::DateTime::DateFormat::Rfc1123);
           response.BlobSize = std::stoll(httpResponse.GetHeaders().at("x-ms-blob-content-length"));
-          return Azure::Response<GetPageRangesResult>(
+          return Azure::Response<Models::_detail::GetPageRangesResult>(
               std::move(response), std::move(pHttpResponse));
         }
 
@@ -10082,9 +10082,10 @@ namespace Azure { namespace Storage { namespace Blobs {
         }
 
       private:
-        static GetPageRangesResult GetPageRangesResultFromXml(_internal::XmlReader& reader)
+        static Models::_detail::GetPageRangesResult GetPageRangesResultInternalFromXml(
+            _internal::XmlReader& reader)
         {
-          GetPageRangesResult ret;
+          Models::_detail::GetPageRangesResult ret;
           enum class XmlTagName
           {
             k_PageList,