What is the default TTL for a Route53 Alias record pointing to a Cloudfront resource?

Question

I am converting a route53 CNAME recordset with 60 seconds ttl to an A recordset pointing to a cloudfront resource.

The AWS documentation states: "If an alias record points to an AWS resource, you can't set the time to live (TTL); Route 53 uses the default TTL for the resource."

What is the default TTL for a Route53 Alias record pointing to a Cloudfront resource?

Answer 1

The TTL on *.cloudfront.net hostname A records (and, by extension, their aliases) is 60 seconds.

I don't recall this being documented, but it is consistently observable using dig.