DNS Lookup

A DNS lookup queries the Domain Name System to find the records attached to a domain, such as the IP address it points to (A/AAAA), its mail servers (MX), or verification text (TXT). It's how the internet translates a name like example.com into an address computers can reach.

Enter the domain, select the MX button, and the tool lists every mail exchanger with its priority. Lower priority numbers are tried first. This is the fastest way to confirm which servers handle a domain's email.

Every record has a TTL (time to live) telling resolvers how long to cache it. After you edit a record, older cached copies keep serving until the TTL expires, a delay called propagation. This tool queries Google's resolver directly, so it reflects the current authoritative answer rather than your ISP's cache.

TXT records hold free-form text used for domain verification and email authentication, including SPF, DKIM and DMARC policies that protect a domain from email spoofing. Checking them is essential when debugging email deliverability.

An A record maps a domain to an IPv4 address; an AAAA record maps it to an IPv6 address. A domain can have both so it's reachable over either protocol.

Yes. It's completely free, needs no signup, and runs queries directly from your browser over DNS-over-HTTPS. The domains you look up are not logged or stored by ToolNova.

Enter a domain to look up its A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records at once, so you can verify configuration or debug email and hosting issues.

Look up the domain's TXT records to see SPF and DMARC entries (and the relevant selector for DKIM), which is how you diagnose email deliverability and spoofing protection.

MX records tell other servers where to deliver a domain's email, in priority order. Enter the domain to list its MX records and confirm mail is pointed at the right host.

Yes. Enter the full subdomain, such as mail.example.com or api.example.com, and the tool will resolve records for that exact hostname. This works for A, AAAA, CNAME, MX, TXT, NS, and SOA queries.

No. The lookup returns the standard record types listed above and does not display DNSSEC signatures, DS records, or RRSIG validation status. For DNSSEC-specific debugging you'll need a dedicated validator.

Your machine may be using a different resolver or a cached answer with a longer TTL. This tool queries Google Public DNS directly over HTTPS, bypassing local caches. If the values differ, wait for your local TTL to expire or flush your DNS cache and try again.