DNS Lookup
Query DNS records for any domain. Check A, AAAA, MX, NS, TXT, CNAME, and more.
Understanding DNS Records
A Record
Maps a domain name to an IPv4 address. Example: example.com → 93.184.216.34
AAAA Record
Maps a domain name to an IPv6 address. Example: example.com → 2606:2800:220:1:248:1893:25c8:1946
MX Record
Specifies mail servers for the domain. Used for email routing with priority values.
NS Record
Indicates the DNS servers responsible for the domain name.
TXT Record
Holds text information. Used for SPF, DKIM, and domain verification.
CNAME Record
Alias that points one domain name to another domain name.
PTR Record
Reverse DNS lookup. Maps IP addresses to domain names.
SOA Record
Start of Authority. Contains zone administration information.
Why Learn DNS?
- Network Fundamentals: DNS is Layer 7 (Application) in the OSI model
- Web Development: Understanding how domains resolve to servers
- Email Configuration: MX, SPF, and DKIM records for email security
- Networking Certifications: Essential for CCNA, CompTIA Network+
- Troubleshooting: Debug DNS resolution issues with dig, nslookup