diff --git a/TechnitiumLibrary.Net/ExtendedNetworkAddress.cs b/TechnitiumLibrary.Net/ExtendedNetworkAddress.cs
new file mode 100644
index 0000000..8deb44b
--- /dev/null
+++ b/TechnitiumLibrary.Net/ExtendedNetworkAddress.cs
@@ -0,0 +1,50 @@
+
+using System;
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using TechnitiumLibrary.IO;
+
+namespace TechnitiumLibrary.Net
+{
+  public class ExtendedNetworkAddress : NetworkAddress
+  {
+    readonly string _domainName;
+
+    #region constructor
+    public ExtendedNetworkAddress(IPAddress address, byte prefixLength, string domainName)
+        : base(address, prefixLength)
+    {
+      _domainName = domainName;
+    }
+    public ExtendedNetworkAddress(NetworkAddress networkAddress, string domainName)
+        : base(networkAddress.Address, networkAddress.PrefixLength)
+    {
+      _domainName = domainName;
+    }
+    #endregion
+
+    public override bool Equals(object obj)
+    {
+      if (obj is ExtendedNetworkAddress other)
+      {
+        return base.Equals(other) && string.Equals(DomainName, other.DomainName, StringComparison.OrdinalIgnoreCase);
+      }
+      return false;
+    }
+
+    public override int GetHashCode()
+    {
+      return HashCode.Combine(base.GetHashCode(), DomainName?.ToLowerInvariant());
+    }
+
+    #region properties
+
+    public string DomainName
+    { 
+      get { return _domainName; } 
+    }
+
+    #endregion
+  }
+}