DNS Lookup Tool

What is DNS?

DNS (Domain Name System) is like the internet's phone book. It translates human-readable domain names (like google.com) into IP addresses (like 142.250.185.46) that computers use to communicate with each other.

DNS Record Types

• A Record: Maps domain to IPv4 address (e.g., 192.0.2.1)
• AAAA Record: Maps domain to IPv6 address
• CNAME Record: Alias pointing to another domain
• MX Record: Mail server for the domain
• TXT Record: Text information (SPF, DKIM, verification)
• NS Record: Authoritative name servers
• SOA Record: Start of Authority information
• PTR Record: Reverse DNS lookup (IP to domain)

What is TTL?

TTL (Time To Live) indicates how long (in seconds) a DNS record should be cached before requesting fresh data. Lower TTL means more frequent updates but more DNS queries.

DNS-over-HTTPS (DoH)

This tool uses Cloudflare's DNS-over-HTTPS service, which encrypts DNS queries for better privacy and security. Traditional DNS queries are sent in plain text, making them vulnerable to eavesdropping and manipulation.

Use Cases

• Verify DNS configuration after domain changes
• Troubleshoot website connectivity issues
• Check mail server (MX) records
• Verify domain ownership (TXT records)
• Find authoritative name servers
• Debug DNS propagation

Common Examples