DNS

DNS resolution monitor

Looks up a DNS record on a schedule, optionally asserting the response matches an expected value. Detects misconfigurations, propagation lag, and registrar issues.

What it checks

Performs a DNS lookup for your configured record type (A, AAAA, CNAME, MX, TXT, or NS). The check is UP when the lookup returns at least one record. If you supply an Expected value, the check fails when the response no longer contains it.

Common use cases

MX records for transactional email — catch propagation issues before send rates collapse.
TXT records for SPF / DKIM / DMARC — a missing DKIM record means deliverability drops silently.
NS records — detect accidental nameserver changes during registrar migrations.
A / AAAA records — confirm DNS still resolves to your load balancer.

Create one via the API

curl https://monitorah.com/api/v1/monitors \
  -X POST \
  -H "Authorization: Bearer mon_live_…" \
  -H "Content-Type: application/json" \
  -d '{
  "name": "My DNS check",
  "type": "DNS",
  "target": "example.com",
  "config": {
    "recordType": "MX",
    "expectedValue": "mx.example.com"
  }
}'

Full reference for this endpoint →

Create a DNS monitor → All docs