diff --git a/server/AyaNova/util/License.cs b/server/AyaNova/util/License.cs
index f4d82427..739a2331 100644
--- a/server/AyaNova/util/License.cs
+++ b/server/AyaNova/util/License.cs
@@ -28,8 +28,12 @@ namespace AyaNova.Core
     internal static class License
     {
 
-        //License server address
-       private const string LICENSE_SERVER_URL = "https://rockfish.ayanova.com/";
+        //License server addresses
+        private const string LICENSE_SERVER_URL_ROCKFISH = "https://rockfish.ayanova.com/";
+        private const string LICENSE_SERVER_URL_IO = "https://io.ayanova.com/";
+        private const string LICENSE_SERVER_URL_EUROPA = "https://europa.ayanova.com/";
+        private const string LICENSE_SERVER_URL_CALLISTO = "https://callisto.ayanova.com/";
+
 
         // #if (DEBUG)        
         //         private const string LICENSE_SERVER_URL = "http://localhost:3001/";
@@ -186,7 +190,7 @@ namespace AyaNova.Core
             {
                 get
                 {
-                   
+
                     return (Status == LicenseStatus.ActivePurchased) || (Status == LicenseStatus.ActiveTrial);
                 }
 
@@ -454,7 +458,7 @@ namespace AyaNova.Core
             trialRequest.DbId = ServerDbId;
 
             log.LogDebug($"Requesting trial license for DBID {LicenseDbId}");
-            string sUrl = $"{LICENSE_SERVER_URL}rvr";
+            string sUrl = $"{LICENSE_SERVER_URL_ROCKFISH}rvr";
             try
             {
                 var content = new StringContent(JsonConvert.SerializeObject(trialRequest), Encoding.UTF8, "application/json");
@@ -492,7 +496,7 @@ namespace AyaNova.Core
         /// </summary>      
         /// <returns>Result string</returns>
 #if (DEBUG)
-        internal static async Task<string> FetchKeyAsync(AyaNova.Api.ControllerHelpers.ApiServerState apiServerState, AyContext ct, ILogger log, bool calledFromInternalJob, bool devTestTrial=false)
+        internal static async Task<string> FetchKeyAsync(AyaNova.Api.ControllerHelpers.ApiServerState apiServerState, AyContext ct, ILogger log, bool calledFromInternalJob, bool devTestTrial = false)
 #else
          internal static async Task<string> FetchKeyAsync(AyaNova.Api.ControllerHelpers.ApiServerState apiServerState, AyContext ct, ILogger log, bool calledFromInternalJob)
 #endif
@@ -504,22 +508,22 @@ namespace AyaNova.Core
 
             var FetchRequest = new dtoFetchRequest() { DbId = LicenseDbId };
 #if (DEBUG)
-            string sUrl = $"{LICENSE_SERVER_URL}rvf";
+            string AppendToLicenseUrl = "rvf";
             if (devTestTrial)
             {
-                sUrl += "?dtt=true";//signal to rockfish to provide a key immediately for dev testing
+                AppendToLicenseUrl += "?dtt=true";//signal to rockfish to provide a key immediately for dev testing
             }
 #else
-         string sUrl = $"{LICENSE_SERVER_URL}rvf";
+         string sUrl = $"rvf";
 #endif
 
             try
             {
-                // string ResponseText = await ServiceProviderProvider.HttpClientFactory.CreateClient().GetStringAsync(sUrl);
-
                 var content = new StringContent(JsonConvert.SerializeObject(FetchRequest), Encoding.UTF8, "application/json");
                 var client = ServiceProviderProvider.HttpClientFactory.CreateClient();
-                var res = await client.PostAsync(sUrl, content);
+                HttpResponseMessage res = null;
+
+                res = await DoFetchAsync(AppendToLicenseUrl, content, client);
                 if (res.IsSuccessStatusCode)
                 {
                     var responseText = await res.Content.ReadAsStringAsync();
@@ -587,6 +591,40 @@ namespace AyaNova.Core
             }
         }
 
+        private static async Task<HttpResponseMessage> DoFetchAsync(string AppendToLicenseUrl, StringContent content, HttpClient client)
+        {
+            var LicenseServer = string.Empty;
+            for (int x = 0; x < 4; x++)
+            {
+                try
+                {
+                    switch (x)
+                    {
+                        case 0:
+                            LicenseServer = LICENSE_SERVER_URL_CALLISTO;
+                            break;
+                        case 1:
+                            LicenseServer = LICENSE_SERVER_URL_IO;
+                            break;
+                        case 2:
+                            LicenseServer = LICENSE_SERVER_URL_EUROPA;
+                            break;
+                        case 3:
+                            LicenseServer = LICENSE_SERVER_URL_ROCKFISH ;
+                            break;
+                    }
+
+                    return await client.PostAsync($"{LicenseServer}{AppendToLicenseUrl}", content);
+
+                }
+                catch(System.Net.Http.HttpRequestException){
+                    if(x==3)
+                        throw;
+                }
+            }
+            return null;            
+        }
+
 
         /// <summary>
         /// Initialize the license