diff --git a/specification/network/resource-manager/Microsoft.Network/2017-09-01/applicationSecurityGroup.json b/specification/network/resource-manager/Microsoft.Network/2017-09-01/applicationSecurityGroup.json
index 2d2970796ca3..3067478f7a88 100644
--- a/specification/network/resource-manager/Microsoft.Network/2017-09-01/applicationSecurityGroup.json
+++ b/specification/network/resource-manager/Microsoft.Network/2017-09-01/applicationSecurityGroup.json
@@ -206,6 +206,44 @@
           "List all application security groups": { "$ref": "./examples/ApplicationSecurityGroupListAll.json" }
         }
       }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/applicationSecurityGroups": {
+      "get": {
+        "tags": [
+          "ApplicationSecurityGroups"
+        ],
+        "operationId": "ApplicationSecurityGroups_List",
+        "description": "Gets all the application security groups in a resource group.",
+        "parameters": [
+          {
+            "name": "resourceGroupName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the resource group."
+          },
+          {
+            "$ref": "#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/SubscriptionIdParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Request successful. The operation returns a list of application security group resources.",
+            "schema": {
+              "$ref": "#/definitions/ApplicationSecurityGroupListResult"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "List load balancers in resource group": { "$ref": "./examples/ApplicationSecurityGroupList.json" }
+        },
+        "x-ms-pageable": {
+          "nextLinkName": "nextLink"
+        }
+      }
     }
   },
   "definitions": {
diff --git a/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupList.json b/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupList.json
new file mode 100644
index 000000000000..5d0e7a7aeaac
--- /dev/null
+++ b/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupList.json
@@ -0,0 +1,35 @@
+{
+    "parameters" : {
+      "api-version" : "2017-09-01",
+      "subscriptionId" : "subid",
+      "resourceGroupName": "rg1"
+    },
+    "responses" : {
+      "200" : {
+        "body" : {
+          "value": [
+            {
+              "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/applicationSecurityGroups/asg1",
+              "name": "asg1",
+              "type": "Microsoft.Network/applicationSecurityGroups",
+              "location": "westus",
+              "properties": {
+                "provisioningState": "Succeeded",
+                "resourceGuid": "00000000-0000-0000-0000-000000000000"
+              }
+            },
+            {
+              "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/applicationSecurityGroups/asg2",
+              "name": "asg2",
+              "type": "Microsoft.Network/applicationSecurityGroups",
+              "location": "westus",
+              "properties": {
+                "provisioningState": "Succeeded",
+                "resourceGuid": "00000000-0000-0000-0000-000000000000"
+              }
+            }
+          ]
+        }
+      }
+    }
+  }
diff --git a/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupListAll.json b/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupListAll.json
index 36feeb74d4ab..3253d729464b 100644
--- a/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupListAll.json
+++ b/specification/network/resource-manager/Microsoft.Network/2017-09-01/examples/ApplicationSecurityGroupListAll.json
@@ -18,7 +18,7 @@
             }
           },
           {
-            "id": "/subscriptions/subid/resourceGroups/rg2/providers/Microsoft.Network/applicationSecurityGroups/asg2",
+            "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/applicationSecurityGroups/asg2",
             "name": "asg2",
             "type": "Microsoft.Network/applicationSecurityGroups",
             "location": "westus",