Minimal DNS zone records

What nameservers provide information about your domain?

NS grumblr.org. ns1.digitalocean.com.
NS grumblr.org. ns2.digitalocean.com.
NS grumblr.org. ns3.digitalocean.com.

What hosts are in your zone?

A grumblr.org. 192.186.103.98
A mail.grumblr.org. 192.186.103.98
CNAME www.grumblr.org. grumblr.org.

Where to send mail for your domain?

MX grumblr.org. mail.grumblr.org. 10