diff --git a/examples/WireMock.Net.StandAlone.NETCoreApp/Properties/launchSettings.json b/examples/WireMock.Net.StandAlone.NETCoreApp/Properties/launchSettings.json
new file mode 100644
index 00000000..c52dce78
--- /dev/null
+++ b/examples/WireMock.Net.StandAlone.NETCoreApp/Properties/launchSettings.json
@@ -0,0 +1,8 @@
+{
+  "profiles": {
+    "WireMock.Net.StandAlone.NETCoreApp": {
+      "commandName": "Project",
+      "commandLineArgs": "--Urls http://*:9090"
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/WireMock.Net/Http/PortUtil.cs b/src/WireMock.Net/Http/PortUtil.cs
index 223d2535..0f101c75 100644
--- a/src/WireMock.Net/Http/PortUtil.cs
+++ b/src/WireMock.Net/Http/PortUtil.cs
@@ -1,13 +1,16 @@
 using System.Net;
 using System.Net.Sockets;
+using System.Text.RegularExpressions;
 
 namespace WireMock.Http
 {
     /// <summary>
-    /// The ports.
+    /// Utility class
     /// </summary>
     public static class PortUtil
     {
+        private static readonly Regex UrlDetailsRegex = new Regex(@"^(?<proto>\w+)://[^/]+?(?<port>\d+)?/", RegexOptions.Compiled);
+
         /// <summary>
         /// The find free TCP port.
         /// </summary>
@@ -30,5 +33,24 @@ namespace WireMock.Http
                 tcpListener?.Stop();
             }
         }
+
+        /// <summary>
+        /// Extract a proto and port from a URL.
+        /// </summary>
+        public static bool TryExtractProtocolAndPort(string url, out string proto, out int port)
+        {
+            proto = null;
+            port = -1;
+
+            Match m = UrlDetailsRegex.Match(url);
+            if (m.Success)
+            {
+                proto = m.Groups["proto"].Value;
+
+                return int.TryParse(m.Groups["port"].Value, out port);
+            }
+
+            return false;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Owin/AspNetCoreSelfHost.cs b/src/WireMock.Net/Owin/AspNetCoreSelfHost.cs
index abac138a..7b8da81b 100644
--- a/src/WireMock.Net/Owin/AspNetCoreSelfHost.cs
+++ b/src/WireMock.Net/Owin/AspNetCoreSelfHost.cs
@@ -1,5 +1,4 @@
 #if NETSTANDARD
-using System;
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
@@ -8,6 +7,7 @@ using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
+using WireMock.Http;
 using WireMock.Validation;
 
 namespace WireMock.Owin
@@ -20,7 +20,7 @@ namespace WireMock.Owin
 
         public bool IsStarted { get; private set; }
 
-        public List<Uri> Urls { get; } = new List<Uri>();
+        public List<string> Urls { get; } = new List<string>();
 
         public List<int> Ports { get; } = new List<int>();
 
@@ -31,9 +31,12 @@ namespace WireMock.Owin
 
             foreach (string uriPrefix in uriPrefixes)
             {
-                var uri = new Uri(uriPrefix);
-                Urls.Add(uri);
-                Ports.Add(uri.Port);
+                Urls.Add(uriPrefix);
+
+                int port;
+                string host;
+                PortUtil.TryExtractProtocolAndPort(uriPrefix, out host, out port);
+                Ports.Add(port);
             }
 
             _options = options;
diff --git a/src/WireMock.Net/Owin/IOwinSelfHost.cs b/src/WireMock.Net/Owin/IOwinSelfHost.cs
index 2d6542ff..2a378b2f 100644
--- a/src/WireMock.Net/Owin/IOwinSelfHost.cs
+++ b/src/WireMock.Net/Owin/IOwinSelfHost.cs
@@ -15,12 +15,12 @@ namespace WireMock.Owin
         bool IsStarted { get; }
 
         /// <summary>
-        /// Gets the url.
+        /// Gets the urls.
         /// </summary>
         /// <value>
         /// The urls.
         /// </value>
-        List<Uri> Urls { get; }
+        List<string> Urls { get; }
 
         /// <summary>
         /// Gets the ports.
diff --git a/src/WireMock.Net/Owin/OwinSelfHost.cs b/src/WireMock.Net/Owin/OwinSelfHost.cs
index bfdde820..9d866d55 100644
--- a/src/WireMock.Net/Owin/OwinSelfHost.cs
+++ b/src/WireMock.Net/Owin/OwinSelfHost.cs
@@ -7,6 +7,7 @@ using JetBrains.Annotations;
 using WireMock.Validation;
 using Owin;
 using Microsoft.Owin.Hosting;
+using WireMock.Http;
 
 namespace WireMock.Owin
 {
@@ -14,7 +15,7 @@ namespace WireMock.Owin
     {
         private readonly WireMockMiddlewareOptions _options;
         private readonly CancellationTokenSource _cts = new CancellationTokenSource();
-        private System.Threading.Thread _internalThread;
+        private Thread _internalThread;
 
         public OwinSelfHost([NotNull] WireMockMiddlewareOptions options, [NotNull] params string[] uriPrefixes)
         {
@@ -23,9 +24,12 @@ namespace WireMock.Owin
 
             foreach (string uriPrefix in uriPrefixes)
             {
-                var uri = new Uri(uriPrefix);
-                Urls.Add(uri);
-                Ports.Add(uri.Port);
+                Urls.Add(uriPrefix);
+
+                int port;
+                string host;
+                PortUtil.TryExtractProtocolAndPort(uriPrefix, out host, out port);
+                Ports.Add(port);
             }
 
             _options = options;
@@ -33,7 +37,7 @@ namespace WireMock.Owin
 
         public bool IsStarted { get; private set; }
 
-        public List<Uri> Urls { get; } = new List<Uri>();
+        public List<string> Urls { get; } = new List<string>();
 
         public List<int> Ports { get; } = new List<int>();
 
@@ -76,7 +80,7 @@ namespace WireMock.Owin
             var servers = new List<IDisposable>();
             foreach (var url in Urls)
             {
-                servers.Add(WebApp.Start(url.ToString(), startup));
+                servers.Add(WebApp.Start(url, startup));
             }
 
             IsStarted = true;
diff --git a/src/WireMock.Net/WireMock.Net.csproj b/src/WireMock.Net/WireMock.Net.csproj
index 6491c556..9d84c056 100644
--- a/src/WireMock.Net/WireMock.Net.csproj
+++ b/src/WireMock.Net/WireMock.Net.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <Description>Lightweight Http Mocking Server for .Net, inspired by WireMock from the Java landscape.</Description>
     <AssemblyTitle>WireMock.Net</AssemblyTitle>
-    <Version>1.0.2.2</Version>
+    <Version>1.0.2.3</Version>
     <Authors>Alexandre Victoor;Stef Heyenrath</Authors>
     <TargetFrameworks>net45;net452;net46;netstandard1.3</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>