DNS Lookup
Look up A, AAAA, MX, NS, CNAME, and TXT records for any domain over DNS-over-HTTPS.
O que é DNS Lookup?
A DNS lookup queries the Domain Name System for the records published against a domain name and returns the raw values, the same way a mail server, browser, or resolver would when connecting to that domain. Each record type carries a different kind of information: A records map a name to an IPv4 address, AAAA to an IPv6 address, MX records list the mail servers that accept mail for the domain (with a preference ordering), NS records name the authoritative nameservers, CNAME records alias one name to another, and TXT records hold arbitrary text such as SPF, verification tokens, and DKIM selectors. This tool resolves them over DNS-over-HTTPS, so the result reflects what the public DNS tree actually serves rather than any single host's cached or filtered view, and is the building block for diagnosing everything from email delivery to website reachability.
Como usar DNS Lookup
- Type a domain name (e.g. example.com) into the domain field.
- Pick the record type you want from the dropdown — A, AAAA, MX, NS, CNAME, or TXT.
- Click "Look up" to resolve the records via DNS-over-HTTPS.
- Copy any returned value with its copy button; switch record type and look up again to inspect another.
Exemplos
Find the IPv4 address
Entrada: example.com — type A
Saída: 93.184.216.34
Find the mail servers
Entrada: example.com — type MX
Saída: mail.example.com (preference 10)
Erros comuns
- Confusing an A record (IPv4) with an AAAA record (IPv6) — a domain with only AAAA records is unreachable from networks without IPv6 connectivity.
- Reading a missing CNAME result as "the domain is broken" — apex domains almost always use A/AAAA records rather than a CNAME, so query those instead.
- Assuming no MX records means the domain doesn't receive mail and ignoring that mail may still be routed via a wildcard or fallback MX higher up the tree.
- Forgetting that DNS responses are cached with a TTL, so a record you just changed at the authoritative server can still show the old value here for minutes or more.
Por que usar esta ferramenta
- Resolves via DNS-over-HTTPS, so results are consistent and not affected by your local network's resolver or its filtering.
- Supports the six record types (A, AAAA, MX, NS, CNAME, TXT) that cover the vast majority of day-to-day DNS questions.
- MX records are parsed into exchange and preference, and TXT records are de-quoted, so you read the actual values rather than DNS wire format.
- One-click copy on every returned record, no sign-up or rate-limited dashboard involved.