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What is NSLookup?
Perform DNS lookups to find all DNS records for any domain. Our NSLookup tool queries DNS servers to retrieve A, AAAA, MX, NS, TXT, CNAME, SOA, and other record types. Essential for network troubleshooting and domain configuration.
Key Features
How to Use NSLookup
Enter the domain name (e.g., example.com)
Select record type (or query all)
Click Submit to lookup
View the DNS records and details
Common Use Cases
Tips & Best Practices
Check MX records to troubleshoot email delivery issues
Use to verify DNS changes after migration
Query TXT records to check SPF, DKIM, and DMARC settings
Frequently Asked Questions
What is NSLookup?
NSLookup (Name Server Lookup) is a network tool that queries DNS servers to find information about domain names — like IP addresses, mail servers, and other DNS records.
Why are my DNS records different from expected?
DNS changes take time to propagate (typically 24-48 hours). Use our DNS Propagation tool to check global status.
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NSLookup is part of our Network tools collection at AllInAOne. Use our free online tools for all your network needs — no registration required.