Understanding DNS
DNS (Domain Name System) translates domain names to IP addresses. It's the phonebook of the internet.
DNS Record Types
A Record
Maps domain to IPv4 addressMost basic record typeExample: example.com → 93.184.216.34AAAA Record
Maps domain to IPv6 addressGrowing in importanceLonger address formatCNAME Record
Alias for another domainPoints to canonical nameUsed for subdomainsMX Record
Mail server configurationPriority for multiple serversEssential for emailTXT Record
Text informationSPF, DKIM, DMARCDomain verificationNS Record
Nameserver informationDNS authorityDelegation recordsUsing DNS Lookup
Step 1: Enter Domain
Type the domain you want to query.
Step 2: Select Record Type
Choose which DNS record to look up.
Step 3: View Results
See the DNS records and values.
Troubleshooting with DNS
Website Not Loading
Check A record points to correct IPVerify nameservers are setCheck propagation statusEmail Not Working
Verify MX recordsCheck SPF/DKIM recordsConfirm domain verificationSSL Issues
Check CAA recordsVerify domain ownershipCheck CNAME for CDNsDNS Propagation
Changes take time to spread:
Can take up to 48 hoursCheck from multiple locationsClear local DNS cacheQuery DNS records for troubleshooting and analysis!