diff --git a/OpenSim/Region/CoreModules/Framework/UserManagement/HGUserManagementModule.cs b/OpenSim/Region/CoreModules/Framework/UserManagement/HGUserManagementModule.cs
index 4df70526b0..80c96fc36e 100644
--- a/OpenSim/Region/CoreModules/Framework/UserManagement/HGUserManagementModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/UserManagement/HGUserManagementModule.cs
@@ -115,32 +115,34 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
                 }
 
                 // This is it! Let's ask the other world
-                if (words[0].Contains("."))
+                if (words[0].Contains('.'))
                 {
                     string[] names = words[0].Split(Util.SplitDotArray);
                     if (names.Length >= 2)
                     {
-                        string uriStr = "http://" + words[1].ToLower();
-                        string SSLuriStr = "https://" + words[1].ToLower();
+                        ReadOnlySpan<char> words1lower = words[1].ToLower();
+                        string uriStr = string.Concat("http://", words1lower);
+
                         // Let's check that the last name is a valid address
                         if(!Uri.TryCreate(uriStr, UriKind.Absolute, out _))
                         {
-                            m_log.DebugFormat("[USER MANAGEMENT MODULE]: Malformed address {0}", words[1].ToLower());
+                            m_log.Debug($"[USER MANAGEMENT MODULE]: Malformed address {words1lower}");
                             return;
-                        }                    
+                        }
 
                         UUID userID = UUID.Zero;
-                        if(!WebUtil.GlobalExpiringBadURLs.ContainsKey(uriStr) || !WebUtil.GlobalExpiringBadURLs.ContainsKey(SSLuriStr))
+                        if(!WebUtil.GlobalExpiringBadURLs.ContainsKey(uriStr))
                         {
                             UserAgentServiceConnector uasConn = new(uriStr);
 
                             // If fail to connect with http... try with https...
                             if (uasConn is null)
                             {
+                                string SSLuriStr = string.Concat("https://", words1lower); // words[1] already validated
                                 uasConn = new UserAgentServiceConnector(SSLuriStr);
                                 if (uasConn is null)
                                 {
-                                    m_log.DebugFormat("[USER MANAGEMENT MODULE]: UserAgentServiceConnector failed to connect to {0}", words[1].ToLower());
+                                    m_log.Debug($"[USER MANAGEMENT MODULE]: UserAgentServiceConnector failed to connect to {words1lower}");
                                     return;
                                 }
                                 uriStr = SSLuriStr;
@@ -156,7 +158,7 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
                             }
                         }
 
-                        if (!userID.Equals(UUID.Zero))
+                        if (userID.IsNotZero())
                         {
                             UserData ud = new()
                             {
@@ -166,10 +168,10 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
                             };
                             users.Add(ud);
                             AddUser(userID, names[0], names[1], uriStr);
-                            m_log.DebugFormat("[USER MANAGEMENT MODULE]: User {0}@{1} found", words[0], words[1]);
+                            m_log.Debug($"[USER MANAGEMENT MODULE]: User {words[0]}@{words[1]} found");
                         }
                         else
-                            m_log.DebugFormat("[USER MANAGEMENT MODULE]: User {0}@{1} not found", words[0], words[1]);
+                            m_log.Debug($"[USER MANAGEMENT MODULE]: User {words[0]}@{words[1]} not found");
                     }
                 }
             }
diff --git a/OpenSim/Services/HypergridService/HGFriendsService.cs b/OpenSim/Services/HypergridService/HGFriendsService.cs
index 0ee900c4f7..87c4bb2158 100644
--- a/OpenSim/Services/HypergridService/HGFriendsService.cs
+++ b/OpenSim/Services/HypergridService/HGFriendsService.cs
@@ -78,7 +78,7 @@ namespace OpenSim.Services.HypergridService
                 if (configName != String.Empty)
                     m_ConfigName = configName;
 
-                Object[] args = new Object[] { config };
+                Object[] args = [ config ];
 
                 IConfig serverConfig = config.Configs[m_ConfigName];
                 if (serverConfig == null)
@@ -309,7 +309,7 @@ namespace OpenSim.Services.HypergridService
             // But now we need to confirm that the requester is who he says he is
             // before we act on the friendship request.
 
-            if (!fromName.Contains("@"))
+            if (!fromName.Contains('@'))
                 return;
 
             string[] parts = fromName.Split(new char[] {'@'});