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What is a DNS Lookup?

DNS (Domain Name System) Lookup queries name servers to resolve a human-readable domain name into its underlying IP addresses and configurations.

When you troubleshoot domain verification (for services like Vercel, Google Workspace, or AWS) or email delivery issues, you need to verify if your DNS records propagated correctly.

This tool uses a Node.js backend to perform a raw network query against the DNS system, retrieving A, AAAA, MX (Mail), TXT (Verification/SPF), NS (Nameservers), and CNAME records.

1How to Use

  • 1. Type a naked domain (e.g., github.com) or a subdomain (e.g., api.github.com).
  • 2. The server performs a `dns.resolve` for various record types concurrently.
  • 3. The tool neatly maps the responses, allowing you to instantly assert if your records are correctly published.