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🌐 NS Lookup Tool

Query DNS records — A, AAAA, MX, NS, TXT, CNAME, SOA, PTR, SRV, CAA. Real-time via Cloudflare DoH.

DNS Lookup
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; TechOreo NS Lookup Tool
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; ─────────────────────────────────────
; Enter a domain above and click Lookup
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Record Type Guide
A IPv4 address of a domain
AAAA IPv6 address of a domain
MX Mail server for the domain
NS Authoritative name servers
TXT SPF, DKIM, DMARC, verification
CNAME Alias pointing to another domain
SOA Start of Authority — zone info
PTR Reverse lookup IP → hostname
SRV Service location records
CAA Certificate Authority Authorization
DNS Resolver
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About DNS Record Types

A & AAAA Records

A records map a hostname to an IPv4 address. AAAA records do the same for IPv6. These are the most common DNS record types — every website uses at least one to direct browsers to a server.

MX Records

Mail Exchanger records specify the mail servers responsible for accepting email for a domain. Each MX record has a priority value — lower numbers = higher priority. Useful for diagnosing email delivery issues.

TXT Records

TXT records store arbitrary text. They're widely used for SPF (email authentication), DKIM keys, DMARC policies, domain ownership verification for Google, AWS, and other services.

TTL & Propagation

Time To Live (TTL) defines how long DNS resolvers cache the record (in seconds). Lower TTL = faster propagation for changes. A TTL of 300 means caches expire every 5 minutes.