DNS Lookup
Look up live A, AAAA, CNAME, MX, NS, TXT, and SOA records for a domain using public DNS-over-HTTPS resolvers
What is DNS Lookup?
Queries the live Domain Name System for a domain's records, A, AAAA, CNAME, MX, NS, TXT and SOA, using DNS-over-HTTPS at query time. Engineers use it to verify migrations, debug mail delivery, confirm nameserver delegation and inspect SPF/DKIM text records without touching a terminal.
How to Use This Tool
- Enter the domain, Type a bare domain like example.com (no https://, no paths).
- Pick the record type, A for IPv4, AAAA for IPv6, MX for mail servers, TXT for SPF/DKIM, NS for delegation, CNAME for aliases, SOA for zone authority.
- Click Lookup, Live answers appear with a count and the resolver source. Copy them or download as CSV/PDF.
Example: Check a domain's DNS records
Enter example.com and select A to ask a public DNS-over-HTTPS resolver for its IPv4 address records. Select AAAA to check IPv6 addresses, MX to see mail servers and priorities, or TXT to inspect published text such as SPF policy. Results reflect the selected resolver and may be affected by DNS caching.
Understanding the Results
Records (N) lists every answer returned for that type, a domain can hold several A records for round-robin or multiple TXT records for SPF plus verification tokens. Source names the DNS-over-HTTPS resolver that answered. No records found means the name exists but carries no records of the selected type (or the name itself does not exist). Because resolvers cache, very recent DNS changes can take minutes to appear.
Tips & Best Practices
• Debugging email? Check MX for the mail exchangers and TXT for the v=spf1 policy, most delivery failures live in one of those two.
• After a DNS migration, query NS to confirm delegation plus A/AAAA to confirm the new addresses, from an incognito window to dodge local cache.
• For TTL values and propagation detail, follow up with the TTL Checker; for ownership and expiry, use WHOIS Lookup.
Frequently Asked Questions
Common types: A (IPv4), AAAA (IPv6), CNAME (alias), MX (mail), NS (name servers), TXT (text), SOA (authority).
Yes, every lookup runs over DNS-over-HTTPS at the moment you click. The only lag is resolver caching: records changed seconds ago may show previous values until cached TTLs expire.
Either the domain has no records of that type (e.g. asking MX on a domain with no mail), or the domain does not exist. Cross-check with an A lookup and a WHOIS query to tell the cases apart.
The domain is sent to public DNS-over-HTTPS resolvers to perform the lookup, that is inherent to DNS. NETCUE itself does not log, store or transmit your queries elsewhere; resolver operators see standard DNS traffic.
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