diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationTracerProviderBuilderExtensions.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationTracerProviderBuilderExtensions.cs
index 8b2a728b5e..f44442a9ef 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationTracerProviderBuilderExtensions.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationTracerProviderBuilderExtensions.cs
@@ -120,7 +120,7 @@ private static void AddAspNetCoreInstrumentationSources(
         }
         else
         {
-            builder.AddSource(HttpInListener.ActivitySourceName);
+            builder.AddSource(HttpInListener.ActivitySource.Name);
             builder.AddLegacySource(HttpInListener.ActivityOperationName); // for the activities created by AspNetCore
         }
 
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md b/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md
index 89bcc1fdfb..bbddaafeae 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md
@@ -8,6 +8,9 @@
   AppContext switch to `false` (its default value is `true`).
   ([#3993](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/3993))
 
+* Add instrumentation schema URL to traces for `netstandard2.0`.
+  ([#4066](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4066))
+
 ## 1.15.2
 
 Released 2026-Apr-21
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs
index cb1eb98e71..43f461c6a5 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs
@@ -3,7 +3,6 @@
 
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
-using System.Reflection;
 using System.Runtime.CompilerServices;
 using Microsoft.AspNetCore.Http;
 using OpenTelemetry.Context.Propagation;
@@ -23,12 +22,8 @@ internal class HttpInListener : ListenerHandler
     // https://github.com/dotnet/aspnetcore/blob/8d6554e655b64da75b71e0e20d6db54a3ba8d2fb/src/Hosting/Hosting/src/GenericHost/GenericWebHostBuilder.cs#L85
     internal const string AspNetCoreActivitySourceName = "Microsoft.AspNetCore";
 
-    internal static readonly AssemblyName AssemblyName = typeof(HttpInListener).Assembly.GetName();
-#pragma warning disable IDE0370 // Suppression is unnecessary
-    internal static readonly string ActivitySourceName = AssemblyName.Name!;
-    internal static readonly Version Version = AssemblyName.Version!;
-#pragma warning restore IDE0370 // Suppression is unnecessary
-    internal static readonly ActivitySource ActivitySource = new(ActivitySourceName, Version.ToString());
+    internal static readonly Version SemanticConventionsVersion = new(1, 40, 0);
+    internal static readonly ActivitySource ActivitySource = ActivitySourceFactory.Create<HttpInListener>(SemanticConventionsVersion);
     internal static readonly bool Net7OrGreater = Environment.Version.Major >= 7;
     internal static readonly bool Net10OrGreater = Environment.Version.Major >= 10;
 
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj b/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj
index b90ef7efbc..f9b570708e 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj
@@ -13,15 +13,17 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Compile Include="$(RepoRoot)\src\Shared\Configuration\*.cs" Link="Includes\Configuration\%(Filename).cs" />
-    <Compile Include="$(RepoRoot)\src\Shared\EnvironmentVariables\*.cs" Link="Includes\EnvironmentVariables\%(Filename).cs" Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'" />
-    <Compile Include="$(RepoRoot)\src\Shared\GrpcTagHelper.cs" Link="Includes\GrpcTagHelper.cs" />
-    <Compile Include="$(RepoRoot)\src\Shared\GrpcStatusCanonicalCode.cs" Link="Includes\GrpcStatusCanonicalCode.cs" />
     <Compile Include="$(RepoRoot)\src\Shared\ActivityHelperExtensions.cs" Link="Includes\ActivityHelperExtensions.cs" />
     <Compile Include="$(RepoRoot)\src\Shared\ActivityInstrumentationHelper.cs" Link="Includes\ActivityInstrumentationHelper.cs" />
-    <Compile Include="$(RepoRoot)\src\Shared\ExceptionExtensions.cs" Link="Includes\ExceptionExtensions.cs" />
+    <Compile Include="$(RepoRoot)\src\Shared\ActivitySourceFactory.cs" Link="Includes\ActivitySourceFactory.cs" />
+    <Compile Include="$(RepoRoot)\src\Shared\AssemblyVersionExtensions.cs" Link="Includes\AssemblyVersionExtensions.cs" />
+    <Compile Include="$(RepoRoot)\src\Shared\Configuration\*.cs" Link="Includes\Configuration\%(Filename).cs" />
     <Compile Include="$(RepoRoot)\src\Shared\DiagnosticSourceListener.cs" Link="Includes\DiagnosticSourceListener.cs" />
     <Compile Include="$(RepoRoot)\src\Shared\DiagnosticSourceSubscriber.cs" Link="Includes\DiagnosticSourceSubscriber.cs" />
+    <Compile Include="$(RepoRoot)\src\Shared\EnvironmentVariables\*.cs" Link="Includes\EnvironmentVariables\%(Filename).cs" Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'" />
+    <Compile Include="$(RepoRoot)\src\Shared\ExceptionExtensions.cs" Link="Includes\ExceptionExtensions.cs" />
+    <Compile Include="$(RepoRoot)\src\Shared\GrpcTagHelper.cs" Link="Includes\GrpcTagHelper.cs" />
+    <Compile Include="$(RepoRoot)\src\Shared\GrpcStatusCanonicalCode.cs" Link="Includes\GrpcStatusCanonicalCode.cs" />
     <Compile Include="$(RepoRoot)\src\Shared\Guard.cs" Link="Includes\Guard.cs" />
     <Compile Include="$(RepoRoot)\src\Shared\ListenerHandler.cs" Link="Includes\ListenerHandler.cs" />
     <Compile Include="$(RepoRoot)\src\Shared\NullableAttributes.cs" Link="Includes\NullableAttributes.cs" />
diff --git a/test/OpenTelemetry.Instrumentation.AspNetCore.Tests/MetricTests.cs b/test/OpenTelemetry.Instrumentation.AspNetCore.Tests/MetricTests.cs
index 48dd47f26a..68853382f2 100644
--- a/test/OpenTelemetry.Instrumentation.AspNetCore.Tests/MetricTests.cs
+++ b/test/OpenTelemetry.Instrumentation.AspNetCore.Tests/MetricTests.cs
@@ -8,7 +8,6 @@
 using Microsoft.AspNetCore.Mvc.Testing;
 using Microsoft.AspNetCore.RateLimiting;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using OpenTelemetry.Metrics;
 using OpenTelemetry.Trace;