diff --git a/zio-http/jvm/src/main/scala/zio/http/netty/server/ServerInboundHandler.scala b/zio-http/jvm/src/main/scala/zio/http/netty/server/ServerInboundHandler.scala
index 493e341921..fec613f685 100644
--- a/zio-http/jvm/src/main/scala/zio/http/netty/server/ServerInboundHandler.scala
+++ b/zio-http/jvm/src/main/scala/zio/http/netty/server/ServerInboundHandler.scala
@@ -114,17 +114,21 @@ private[zio] final case class ServerInboundHandler(
 
   }
 
-  private def validateHostHeader(req: Request): Boolean = {
-    req.headers.get("Host") match {
-      case Some(host) =>
-        val isValid = host.forall(c => c.isLetterOrDigit || c == '.' || c == '-')
-        println(s"Host: $host, isValid: $isValid")
-        isValid
-      case None       =>
-        println("Host header missing!")
-        false
-    }
+ private def validateHostHeader(req: Request): Boolean = {
+  req.headers.get("Host") match {
+    case Some(host) =>
+      val parts = host.split(":")
+      val isValidHost = parts(0).forall(c => c.isLetterOrDigit || c == '.' || c == '-')
+      val isValidPort = parts.length == 1 || (parts.length == 2 && parts(1).forall(_.isDigit)) // Allow port number
+      val isValid = isValidHost && isValidPort
+      ZIO.logDebug(s"Host: $host, isValidHost: $isValidHost, isValidPort: $isValidPort, isValid: $isValid")
+      isValid
+    case None       =>
+      ZIO.logDebug("Host header missing!")
+      false
   }
+}
+
 
   override def exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable): Unit =
     cause match {