diff --git a/pkg/dns/show.go b/pkg/dns/show.go
index c29a3f0..d133a2c 100644
--- a/pkg/dns/show.go
+++ b/pkg/dns/show.go
@@ -14,20 +14,24 @@ import (
 
 // Show shows current DNS entries
 func (mgr *Manager) Show(ctx context.Context, names ...string) error {
-	var buf bytes.Buffer
-
 	recs, err := mgr.GetRecords(ctx, names...)
 	if err != nil {
 		return core.Wrap(err, "GetRecords")
 	}
 
+	return writeRecords(recs, os.Stdout)
+}
+
+func writeRecords(recs []libdns.Record, w io.Writer) error {
+	var buf bytes.Buffer
+
 	for _, rr := range recs {
 		_ = fmtRecord(&buf, rr)
 		_, _ = buf.WriteRune('\n')
 	}
 	_, _ = fmt.Fprintf(&buf, "; %v records\n", len(recs))
 
-	_, err = buf.WriteTo(os.Stdout)
+	_, err := buf.WriteTo(w)
 	return err
 }