DNS Pro
DNS Pro is a growing collection of DNS lookup, email policy, domain intelligence, and DNS auditing tools for practical troubleshooting, migration checks, and security reviews.
Discovery
Record Lookups
Record Lookup
Query A, AAAA, CNAME, NS, PTR, SOA, SRV, CAA, and TXT records.
NS Lookup
Check authoritative nameserver records directly.
MX Lookup
Check mail exchange records, priorities, and resolved IPs.
TXT Lookup
Check TXT records, TTL values, and full text content.
CAA Analysis
Review certificate authority authorization records and tags.
PTR Check
Validate reverse DNS and forward-confirmed PTR results.
Email & Security
SPF Checker
Break down SPF mechanisms, redirects, includes, and lookup count.
DMARC Checker
Inspect DMARC policy, reporting, and alignment tags.
DKIM Checker
Check DKIM records with a selector.
Email Security Check
Review SPF, DMARC, DKIM, MTA-STS, TLS-RPT, and BIMI together.
MTA-STS Check
Check the MTA-STS TXT record and HTTPS policy file.
TLS-RPT Check
Inspect TLS-RPT reporting records.
BIMI Check
Inspect BIMI TXT records and parsed BIMI tags.
Blacklist Checker
Check whether a domain or IP appears on common blocklists.
Email Header Analysis
Analyze email headers for SPF, DKIM, DMARC, and routing clues.
Domain Intelligence
Resources
Common Glue Record Problems: DNS Delegation Issues Explained
A complete troubleshooting guide to glue record issues, including in-bailiwick nameservers, missing glue, delegation mismatches, and how to fix DNS resolution failures.
Common PTR Record Problems: Reverse DNS Issues Explained
A complete guide to PTR record problems, including missing reverse DNS, forward-confirmed reverse DNS (FCrDNS), hostname issues, and how PTR impacts email deliverability.
DMARC record explained
A practical breakdown of a DMARC record, including what each tag means and how to interpret the policy.
DNS Records Required for Google Workspace (Complete Setup Guide)
Complete guide to Google Workspace DNS records including MX, SPF, DKIM, DMARC, and domain verification. Includes real record examples and setup best practices.
DNS Records Required for Microsoft 365 (Complete Setup Guide)
Complete guide to Microsoft 365 DNS records including MX, SPF, CNAME, DKIM, and DMARC. Includes real record examples and migration best practices.
How to Check DKIM Selectors (Step-by-Step Guide)
Learn how to find and check DKIM selectors, query DNS correctly, and troubleshoot missing or invalid DKIM records with real examples.
What DNS Pro is for
DNS Pro is designed to make DNS lookups, domain intelligence, and email-related DNS troubleshooting easier to understand. The goal is to present DNS data in a practical way, with context and useful export options.