Instantly query A, AAAA, MX, NS, TXT, CNAME, SOA, SRV, CAA and more DNS records for any domain. Real data, no simulation.
From nameservers to mail routing — get the full picture of any domain's DNS configuration instantly.
Every website you visit, every email you send, and every API call your application makes starts with the same invisible step: a DNS lookup. The Domain Name System (DNS) is the internet's phonebook — it translates human-friendly names like example.com into the numerical IP addresses that computers actually use to route traffic. Without it, you'd need to memorise long strings like 142.250.190.46 just to visit Google.
DNS records are individual instructions stored inside a domain's zone file, hosted on its authoritative nameservers. Each record type controls a specific aspect of how a domain behaves. The A record maps a hostname to an IPv4 address, while AAAA records do the same for IPv6. MX (Mail Exchanger) records tell the internet which servers should receive email for your domain, often ranked by priority so a backup server takes over if the primary is unavailable.
NS (Nameserver) records point to the servers that are authoritative for your zone — effectively telling the world, "these servers hold the truth about this domain." The CNAME (Canonical Name) record creates an alias, allowing www.yourdomain.com to point to yourdomain.com seamlessly. TXT records are among the most versatile — they're used to publish SPF rules for email authentication, DKIM public keys, DMARC policies, Google Search Console verification tokens, and much more.
The SOA (Start of Authority) record sits at the top of every zone and contains critical administrative data: the primary nameserver, the email address of the responsible party (written as a domain name), serial number for tracking updates, refresh intervals, and the minimum TTL (Time to Live). TTL is the number of seconds DNS resolvers are allowed to cache a record before re-querying. A low TTL (like 300 seconds) means changes propagate quickly but generate more DNS traffic; a high TTL (86400 seconds = 24 hours) reduces load but slows propagation during migrations.
SRV records are used by applications to find the hostname and port of specific services — VoIP, instant messaging, and many enterprise systems rely on them. CAA (Certification Authority Authorization) records let domain owners specify which certificate authorities are allowed to issue SSL/TLS certificates for their domain, a key security control against mis-issuance. NAPTR records are used primarily in VoIP and SIP systems to define rewriting rules for URIs.
Whether you're diagnosing an email delivery problem, verifying a new DNS setup after migration, auditing your security posture (SPF, DKIM, DMARC, CAA), or simply curious about how a competitor's infrastructure is configured — a DNS lookup gives you ground truth. Our free tool queries live authoritative nameservers in real time, returning every available record type so you have the full picture in a single view.
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