Added 'Route 53' to CAA document.
@@ -17,7 +17,7 @@ Flags are controlled by modifier.:
- CAA_CRITICAL: Issuer critical flag. CA that does not understand this tag will refuse to issue certificate for this domain.
-CAA record is supported only by BIND and Google Cloud DNS. Some certificate authorities may not support this record until the mandatory date of September 2017.
+CAA record is supported only by BIND, Google Cloud DNS, and Amazon Route 53. Some certificate authorities may not support this record until the mandatory date of September 2017.
{% include startExample.html %}
{% highlight js %}
