diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md b/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md
index df9d7191830..5b608371d46 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/CHANGELOG.md
@@ -2,8 +2,9 @@
 
 ## Unreleased
 
-* Fixed an issue when `server.port` attribute was not set with `server.address`
-  when it has default values (`80` for `HTTP` and `443` for `HTTPS` protocol).
+* Fixed an issue for spans when `server.port` attribute was not set with
+  `server.address` when it has default values (`80` for `HTTP` and
+  `443` for `HTTPS` protocol).
   ([#5419](https://github.com/open-telemetry/opentelemetry-dotnet/pull/5419))
 
 ## 1.7.1
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
index 6da5982f8f4..c6a710e2dd0 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
@@ -50,10 +50,13 @@ public static void OnStopEventWritten(Activity activity, object payload)
             tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeHttpRequestMethod, httpMethod));
 
             tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeServerAddress, request.RequestUri.Host));
-            tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeServerPort, request.RequestUri.Port));
-
             tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeUrlScheme, request.RequestUri.Scheme));
 
+            if (!request.RequestUri.IsDefaultPort)
+            {
+                tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeServerPort, request.RequestUri.Port));
+            }
+
             if (TryFetchResponse(payload, out HttpResponseMessage response))
             {
                 tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeNetworkProtocolVersion, HttpTagHelper.GetProtocolVersionString(response.Version)));
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs
index 81e120c8f7e..620cfcc75d0 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs
@@ -426,14 +426,17 @@ private static void ProcessResult(IAsyncResult asyncResult, AsyncCallback asyncC
             tags.Add(new KeyValuePair<string, object>(SemanticConventions.AttributeHttpRequestMethod, httpMethod));
 
             tags.Add(SemanticConventions.AttributeServerAddress, request.RequestUri.Host);
-            tags.Add(SemanticConventions.AttributeServerPort, request.RequestUri.Port);
-
             tags.Add(SemanticConventions.AttributeUrlScheme, request.RequestUri.Scheme);
             if (protocolVersion != null)
             {
                 tags.Add(SemanticConventions.AttributeNetworkProtocolVersion, HttpTagHelper.GetProtocolVersionString(protocolVersion));
             }
 
+            if (!request.RequestUri.IsDefaultPort)
+            {
+                tags.Add(SemanticConventions.AttributeServerPort, request.RequestUri.Port);
+            }
+
             if (httpStatusCode.HasValue)
             {
                 tags.Add(SemanticConventions.AttributeHttpResponseStatusCode, (int)httpStatusCode.Value);