Monitor for DNS health around the clock:

• From A to TXT: Monitor your key DNS records such as A, AAAA, SOA, TXT, MX, and root server to know when someone tampers with your DNS, and stop a DNS poisoning in its tracks.
• Test worldwide: Just because your DNS works properly on one server, it may not work from all. Our checkpoints catch regional problems before they can spread to the entire DNS network.
• Check serial numbers: The SOA serial number is incremented when a DNS entry changes. Monitoring the serial number catches changes you may not notice if you're only monitoring your A or AAAA records.
• Keep email coming: What would happen if your email suddenly stops getting routed to your mail servers? Monitoring your MX record helps you keep your primary communication channels open.