[tombrossman]

It's not using an A record, it's using a CNAME:

  host blog.lacour.me
  blog.lacour.me is an alias for silvrback.herokuapp.com.
  silvrback.herokuapp.com is an alias for us-east-1-a.route.herokuapp.com.
  us-east-1-a.route.herokuapp.com has address 54.83.3.141

[VeilEm]

The CNAME doesn't resolve for me either. I can't see whatever this is.