What DNS records should I check?

A/AAAA for IP addresses, CNAME for aliases, MX for email delivery, NS for authoritative nameservers, TXT for SPF/verification, and SRV for service endpoints.

How do I verify SPF and DMARC?

SPF is a TXT record starting with v=spf1 on the root domain. DMARC is a TXT record at _dmarc.example.com starting with v=DMARC1. This tool surfaces both when present.

Reverse DNS maps an IP address to a hostname using PTR records. It is often used for email server reputation and diagnostics.

DNS Lookup & Reverse DNS

Check DNS records for any domain (A, AAAA, CNAME, MX, NS, TXT, SRV) and run reverse DNS on IPs. Includes quick SPF/DMARC checks.

Tool Guide & Tips

Understand DNS records

Query DNS instantly for A/AAAA, CNAME, MX, NS, TXT, and SRV records, and perform reverse DNS on IPv4/IPv6. Surface SPF and DMARC details to verify email setup and track propagation.

A/AAAA, MX, TXT, NS, CNAME, SRV Reverse DNS (PTR) lookup SPF/DMARC visibility

Troubleshoot common issues

Confirm nameserver changes after a migration.
Validate SPF/DMARC to improve deliverability.
Use PTR checks for mail server reputation.

What’s next

Next: validate SPF/DMARC policies and nameserver health across environments. Running critical email or APIs? We provide managed DNS and dependable hosting.

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