Check the publicly available DNS records for any domain. Look up IP addresses, mail servers, nameservers, aliases and text records to help troubleshoot domain, website and email configuration.
Querying DNS servers across public resolvers…
The Domain Name System (DNS) acts as the address book of the Internet. When you type a domain like cymerit.com into your browser, DNS translates that human-friendly name into a machine-readable IP address so your device can connect to the target web server.
Cymerit's Free DNS Lookup Tool queries high-speed public DNS resolvers (Cloudflare 1.1.1.1, Google 8.8.8.8, or authoritative systems) using secure DNS-over-HTTPS (DoH). It parses and categorizes every record returned, helping system administrators, website owners, and developers diagnose domain routing, SSL certificate setup, and email delivery.
Maps a hostname directly to an IPv4 address (e.g., 162.251.85.103). Essential for pointing domains to standard web hosting servers.
Maps a domain to a modern 128-bit IPv6 address. Essential for next-generation network routing and mobile carriers.
Designates the Mail Exchange servers responsible for accepting incoming emails for the domain, with priority weights.
Creates an alias pointing one domain name to another canonical hostname (e.g., pointing www.example.com to example.com).
Holds arbitrary text data, primarily used for email authentication (SPF, DKIM, DMARC) and third-party domain ownership verification.
Delegates a domain zone to authoritative Nameservers that contain the definitive DNS database records for the domain.
Start of Authority contains core administrative information including the primary nameserver, admin email, zone serial, and refresh timers.
Specifies which Certificate Authorities (CAs) like Let's Encrypt, DigiCert, or Sectigo are authorized to issue SSL/TLS certificates for the domain.
Defines the hostname and port for specific services (SIP, VoIP, XMPP, Office 365 Autodiscover) using format _service._proto.name.
Pointer / Reverse DNS resolves an IP address back to its verified domain name, widely required by spam filters for mail servers.
v=spf1 and includes all authorized sending servers.@ and www records are configured.A DNS lookup is the query process of finding the DNS records associated with a domain name. It returns details like the server IP addresses hosting the website (A/AAAA records), the mail servers handling email (MX records), and verification strings (TXT records).
Not all domains utilize every DNS record type. For example, if a domain does not send or receive email, it will not have MX records. Similarly, domains without IPv6 hosting will return empty AAAA records. An empty result simply means the domain does not publish records for that specific type.
NXDOMAIN stands for Non-Existent Domain. When a DNS resolver returns NXDOMAIN, it indicates that the queried domain name is not registered or has no active zone configuration in the global DNS root and top-level domain (TLD) registry.
DNS propagation typically takes anywhere from a few minutes up to 24–48 hours, depending on the TTL (Time to Live) value set on the previous records and caching policies of Internet Service Providers (ISPs).
Enter an IP address (such as 8.8.8.8) into the search field and select the PTR record type. Our tool automatically converts the IP address into the appropriate reverse DNS zone format (8.8.8.8.in-addr.arpa) and queries the reverse pointer record.
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