🌍 DNS Lookup

What is DNS?

DNS (Domain Name System) is the internet's phonebook, translating human-readable domain names into machine-readable IP addresses.

DNS records include:

• A Record: Maps domain to IPv4 address
• AAAA Record: Maps domain to IPv6 address
• MX Record: Mail exchange server for email
• NS Record: Name servers for the domain
• TXT Record: Text verification and SPF/DKIM
• CNAME: Canonical name (alias) records

How to Use DNS Lookup

Performing a DNS lookup is straightforward:

1. Enter the domain name (e.g., example.com)
2. Select the DNS record type
3. Click "Lookup" to query
4. Review the DNS records displayed
5. Analyze results for insights

The tool displays:

• All DNS record types with values
• TTL (Time To Live) information
• Record priority and weights
• Propagation status check

Common DNS Use Cases

Email Troubleshooting:
Verify MX records, SPF, DKIM, and DMARC settings to ensure email deliverability and prevent spam filtering.

Domain Verification:
Check domain ownership, verify DNS propagation after changes, and ensure all records are configured correctly.

Security Analysis:
Identify potential DNS misconfigurations, check for suspicious records, and verify domain authentication settings.

DNS Record Types Explained

A Record: Points a domain to an IPv4 address. The most common DNS record type.
AAAA Record: Points a domain to an IPv6 address for modern networks.
MX Record: Specifies mail servers for receiving emails. Priority determines server order.
NS Record: Delegates a domain to a set of DNS servers.
TXT Record: Stores text information, often used for SPF, DKIM, and domain verification.

Tips for DNS Management

✔ Always verify DNS changes after propagation (24-48 hours)
✔ Monitor TTL values for optimal performance
✔ Keep backup DNS records
✔ Use multiple name servers for redundancy
✔ Regularly audit DNS records for security
✔ Document all DNS changes

Proper DNS management ensures website accessibility, email deliverability, and security.