What is a DNS Lookup and how does Dig work?
The Domain Name System (DNS) is the phonebook of the Internet. Humans access information online through domain names, like google.com or noob.tools. Web browsers interact through Internet Protocol (IP) addresses. DNS translates domain names to IP addresses so browsers can load Internet resources.
Dig (Domain Information Groper) is a powerful network administration command-line tool for querying the DNS. It is useful for verifying and troubleshooting DNS problems and performing DNS lookups. Unlike basic tools, dig provides a comprehensive output of the DNS response, making it the preferred tool for network administrators and security professionals.
Our Advanced DNS Lookup GUI brings the power of the native Linux 'dig' command to your browser without needing a local terminal. It executes real queries against live nameservers in real-time.
Common DNS Record Types you can query:
- A / AAAA Records: The most fundamental records. 'A' maps a domain to an IPv4 address, while 'AAAA' maps it to an IPv6 address.
- MX (Mail Exchange): Directs email to a mail server. It indicates how email messages should be routed in accordance with the SMTP protocol.
- TXT (Text): Originally intended for human-readable text, these records are now heavily used for email security (SPF, DKIM, DMARC) and domain verification.
- CNAME (Canonical Name): Aliases one name to another. It's often used to map a subdomain like www.example.com to the primary domain example.com.
- NS (Name Server): Indicates which DNS servers are authoritative for that domain.
- SRV (Service): Specifies a host and port for specific services such as Voice over IP (VoIP), instant messaging, and other protocols.