DNS Monitoring
Track DNS record changes, catch propagation issues, and detect unauthorized modifications to your domain infrastructure. Know the moment your DNS records change.
The problem
DNS is the foundation of your internet presence, but changes to DNS records are often invisible until something breaks. A misconfigured MX record silently stops email delivery. A modified A record redirects users to the wrong server. An expired domain transfers to a new owner. These issues can persist for hours or days without detection.
How MonitorHound helps
MonitorHound periodically resolves your DNS records and compares the results against expected values. When a record changes — whether through legitimate updates, misconfigurations, or malicious modifications — you receive an alert with full details of what changed and when.
What you can monitor
- A and AAAA record IP addresses
- CNAME alias targets
- MX record mail servers and priorities
- NS nameserver delegations
- TXT records (SPF, DKIM, DMARC)
- SOA serial number changes
- DNS resolution failures
- Propagation across regions
Example configuration
{
"type": "dns",
"hostname": "example.com",
"record_type": "A",
"expected_values": ["93.184.216.34"],
"interval_seconds": 300
} Frequently asked questions
Which DNS record types can I monitor?
MonitorHound supports A, AAAA, CNAME, MX, NS, TXT, SRV, and SOA record types. You can monitor multiple record types for the same domain.
How does DNS change detection work?
MonitorHound resolves your DNS records at each check interval and compares the results against expected values. If the resolved records differ from what you configured, an alert is triggered with details about what changed.
Can DNS monitoring detect hijacking?
Yes. By monitoring your A and CNAME records, MonitorHound can detect if your domain suddenly points to an unexpected IP address or hostname — a common indicator of DNS hijacking or unauthorized zone changes.
Does DNS monitoring check propagation?
DNS checks run from multiple geographic locations, so you can detect propagation inconsistencies where some regions see updated records while others still serve stale data.
Protect your DNS infrastructure
Start monitoring your DNS records today. Free plan includes 10 monitors.