DNS Records Lookup Tool
Query and analyze DNS records instantly. Fetch A, AAAA, MX, TXT, CNAME, NS, and SOA configurations for any domain to troubleshoot routing, verify email authentication, and audit network setups.
Common DNS Record Types Explained
The Domain Name System (DNS) is the phonebook of the Internet. It translates human-readable domain names into machine-readable IP addresses and routing instructions. Here are the core records our tool queries:
- A Address Record: Maps a domain name to its corresponding IPv4 address. This is the most common record used to connect users to web servers.
- AAAA IPv6 Address Record: The modern equivalent of the A record, mapping a domain name to an IPv6 address to support the expanding internet protocol.
- CNAME Canonical Name Record: Acts as an alias, pointing one domain or subdomain to another domain name rather than an IP address.
- NS Name Server Record: Indicates which DNS servers are authoritative for the domain. Essentially, it tells the internet where to go to find out the domain's IP address.
- SOA Start of Authority: Contains essential administrative information about the domain, including the primary name server, the email of the domain administrator, and timers for refreshing zones.
- MX Mail Exchange Record: Directs email to a mail server. These records include a priority number (lower numbers mean higher priority) to determine the routing order.
- TXT Text Record: Holds unformatted text data. Originally used for human-readable notes, it is now primarily used for email security (SPF, DKIM, DMARC) and domain ownership verification.
DNS-over-HTTPS (DoH) Architecture
This tool performs resolution using DNS-over-HTTPS (DoH) via public resolvers. Instead of relying on a traditional backend to execute shell dig commands, your browser securely queries standard DNS records over an encrypted HTTPS connection.
Why Perform DNS Audits?
Regularly auditing your domain's DNS configuration is a critical security and operational practice. Misconfigured A or CNAME records can lead to site downtime or expose you to subdomain takeover attacks. Verifying NS records ensures your traffic isn't being hijacked by unauthorized servers.
Furthermore, validating MX and TXT records is essential for email deliverability. Without proper SPF (Sender Policy Framework) and DMARC policies stored in your TXT records, malicious actors can easily spoof your domain, launching phishing campaigns that bypass basic spam filters and damage your brand's reputation.