diff --git a/provider/aws/aws.go b/provider/aws/aws.go
index 6b0a3bf7e..25f3cee4e 100644
--- a/provider/aws/aws.go
+++ b/provider/aws/aws.go
@@ -1159,13 +1159,10 @@ func isAWSAlias(ep *endpoint.Endpoint) string {
 	return ""
 }
 
-var regex = regexp.MustCompile(`(aws.com(.cn)?|tor.com|ont.(com|net))$`)
-
 // canonicalHostedZone returns the matching canonical zone for a given hostname.
 func canonicalHostedZone(hostname string) string {
 	// strings.HasSuffix is optimized for this specific task and avoids the overhead associated with compiling and executing a regular expression.
-	if regex.MatchString(hostname) {
-		// if strings.HasSuffix(hostname, "aws.com") || strings.HasSuffix(hostname, "aws.com.cn") || strings.HasSuffix(hostname, "tor.com") || strings.HasSuffix(hostname, "ont.com") || strings.HasSuffix(hostname, "ont.net") {
+	if strings.HasSuffix(hostname, "aws.com") || strings.HasSuffix(hostname, "aws.com.cn") || strings.HasSuffix(hostname, "tor.com") || strings.HasSuffix(hostname, "ont.com") || strings.HasSuffix(hostname, "ont.net") {
 		parts := strings.Split(hostname, ".")
 		// iterate from the second-last part (zone) towards the beginning
 		for i := len(parts) - 2; i >= 0; i-- {