diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/examples/VirtualNetworkCreateSubnetWithAddressPrefixes.json b/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/examples/VirtualNetworkCreateSubnetWithAddressPrefixes.json
new file mode 100644
index 000000000000..b24ce74940f9
--- /dev/null
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/examples/VirtualNetworkCreateSubnetWithAddressPrefixes.json
@@ -0,0 +1,90 @@
+{
+  "parameters" : {
+    "api-version": "2018-08-01",
+    "subscriptionId" : "subid",
+    "resourceGroupName" : "rg1",
+    "virtualNetworkName" : "test-vnet",
+    "parameters": {
+      "properties": {
+        "addressSpace": {
+          "addressPrefixes": [
+            "10.0.0.0/16"
+          ]
+        },
+        "subnets": [
+          {
+            "name": "test-2",
+            "properties": {
+              "addressPrefixes": [
+                "10.0.0.0/28",
+                "10.0.1.0/28"
+              ]
+            }
+          }
+        ]
+      }
+    }
+  },
+  "responses" : {
+    "200" : {
+      "body" : {
+        "name" : "test-vnet",
+        "id" : "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualNetworks/test-vnet",
+        "type" : "Microsoft.Network/virtualNetworks",
+        "location" : "westus",
+        "properties" : {
+          "provisioningState" : "Succeeded",
+          "addressSpace" : {
+            "addressPrefixes" : [
+              "10.0.0.0/16"
+            ]
+          },
+          "subnets": [
+            {
+              "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualNetworks/test-vnet/subnets/test-2",
+              "name": "test-2",
+              "properties": {
+                "addressPrefixes": [
+                  "10.0.0.0/28",
+                  "10.1.0.0/28"
+                ],
+                "provisioningState": "Succeeded"
+              }
+            }
+          ],
+          "virtualNetworkPeerings" : []
+        }
+      }
+    },
+    "201" : {
+      "body" : {
+        "name" : "test-vnet",
+        "id" : "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualNetworks/test-vnet",
+        "type" : "Microsoft.Network/virtualNetworks",
+        "location" : "westus",
+        "properties" : {
+          "provisioningState" : "Succeeded",
+          "addressSpace" : {
+            "addressPrefixes" : [
+              "10.0.0.0/16"
+            ]
+          },
+          "subnets": [
+            {
+              "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.Network/virtualNetworks/test-vnet/subnets/test-2",
+              "name": "test-2",
+              "properties": {
+                "addressPrefixes": [
+                  "10.0.0.0/28",
+                  "10.0.1.0/28"
+                ],
+                "provisioningState": "Succeeded"
+              }
+            }
+          ],
+          "virtualNetworkPeerings" : []
+        }
+      }
+    }
+  }
+}
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/virtualNetwork.json b/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/virtualNetwork.json
index f4f5a98591d5..a2986c84daa7 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/virtualNetwork.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2018-08-01/virtualNetwork.json
@@ -181,6 +181,7 @@
         "x-ms-examples": {
           "Create virtual network": { "$ref": "./examples/VirtualNetworkCreate.json" },
           "Create virtual network with subnet": { "$ref": "./examples/VirtualNetworkCreateSubnet.json" },
+          "Create virtual network with subnet containing address prefixes": { "$ref": "./examples/VirtualNetworkCreateSubnetWithAddressPrefixes.json" },
           "Create virtual network with service endpoints": { "$ref": "./examples/VirtualNetworkCreateServiceEndpoints.json" }
         }
       },
@@ -866,6 +867,13 @@
           "type": "string",
           "description": "The address prefix for the subnet."
         },
+        "addressPrefixes": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "List of  address prefixes for the subnet."
+        },
         "networkSecurityGroup": {
           "$ref": "./networkSecurityGroup.json#/definitions/NetworkSecurityGroup",
           "description": "The reference of the NetworkSecurityGroup resource."