diff --git a/internal/services/cosmos/cosmosdb_account_resource.go b/internal/services/cosmos/cosmosdb_account_resource.go
index 61deee153107..5144d2d6d946 100644
--- a/internal/services/cosmos/cosmosdb_account_resource.go
+++ b/internal/services/cosmos/cosmosdb_account_resource.go
@@ -301,7 +301,7 @@ func resourceCosmosDbAccount() *pluginsdk.Resource {
 						Optional: true,
 						Elem: &pluginsdk.Schema{
 							Type:         pluginsdk.TypeString,
-							ValidateFunc: validation.IsCIDR,
+							ValidateFunc: validation.Any(validation.IsCIDR, validation.IsIPv4Address),
 						},
 					}
 				}
diff --git a/internal/services/cosmos/cosmosdb_account_resource_test.go b/internal/services/cosmos/cosmosdb_account_resource_test.go
index 64b6a0f87e3b..5515060cfc27 100644
--- a/internal/services/cosmos/cosmosdb_account_resource_test.go
+++ b/internal/services/cosmos/cosmosdb_account_resource_test.go
@@ -4640,7 +4640,7 @@ resource "azurerm_cosmosdb_account" "test" {
   }
 
   is_virtual_network_filter_enabled = true
-  ip_range_filter                   = ["55.0.1.0/24", "55.0.2.0/24"]
+  ip_range_filter                   = ["55.0.1.0/24", "55.0.2.0/24", "0.0.0.0"]
 
   virtual_network_rule {
     id                                   = azurerm_subnet.subnet1.id