DNS
DNS check helps verify DNS records and detect mismatches between name servers.
Requires PRO plan.
When to use
- After DNS migration or email configuration changes.
- When you need to catch DNS inconsistencies quickly.
When to choose another type
- For website availability, use HTTP.
- Use strict mode only if expected values are already known.
Tip:
If your DNS changes regularly (CDN, load balancing), start with server-side comparison mode before strict mode.
Form fields
| Field | Meaning | What to enter | Example |
|---|---|---|---|
| Host | Domain for record validation. | Use domain name without scheme and path. | example.com |
| Check mode for NS, IP, CNAME, MX, SOA | How each record type is validated. | Choose per-record behavior: compare name servers or enforce strict values. | Compare values between name servers |
| NS, IP, MX lists | Reference values for strict mode. | Use when strict mode is selected. | ns1.example.com ns2.example.com |
| CNAME target | Reference value for strict CNAME check. | Specify expected CNAME target. | target.example.net |
| SOA serial | Reference serial value for strict SOA mode. | Fill only if serial is controlled manually. | 2026031601 |
When it becomes an issue
You will see an issue when enabled checks return differing values or strict values do not match.