DNS Lookup Tool
Query DNS records for any domain following RFC 1035 protocol. Check A, AAAA, MX, NS, CNAME, TXT, and SOA records instantly using Cloudflare DNS, Google DNS, and authoritative nameservers.
Our DNS lookup tool queries authoritative nameservers and public resolvers like Cloudflare 1.1.1.1 and Google 8.8.8.8 to retrieve comprehensive DNS records for any domain. Analyze your domain's DNS configuration, troubleshoot email delivery issues with MX records, verify nameserver propagation, and check SPF/DKIM records for email authentication. Perfect for network administrators, developers debugging DNS issues, or anyone managing domain infrastructure.
DNS Record Types
We query multiple DNS record types to give you complete visibility into your domain's configuration. Each record type serves a specific purpose in the DNS infrastructure, from mapping domains to IP addresses to configuring email servers and verifying domain ownership.
Need more network tools? Check our SSL Certificate Checker for validating HTTPS security, HTTP Status Checker for response codes, HTTP Headers Analyzer for security headers, or What Is My IP to identify your public IP address and location.
What is DNS Lookup
Why you need it and how it works
DNS lookup queries the Domain Name System (RFC 1034) to retrieve information about a domain. Our tool checks A, AAAA, MX, NS, CNAME, TXT, and SOA records across global resolvers including Cloudflare, Google DNS, and Quad9.
Troubleshoot connectivity with our HTTP Status Checker, verify SSL certificates, or monitor DNS propagation — no CLI required.
How DNS Resolution Works
The 4-step process explained
Initial Request
Your device sends a query to a recursive resolver (ISP or public DNS like 1.1.1.1).
Root Server Query
If not cached, the resolver queries one of the 13 root nameserver clusters.
TLD Lookup
The root directs to the appropriate TLD server (.com, .org, .net, etc.).
Authoritative Answer
The TLD points to the domain's authoritative nameserver, which returns the final DNS records.
DNS Record Types
What each record type does
Address
Maps domains to IPv4 addresses. The most fundamental record type.
IPv6 Address
Maps domains to IPv6 addresses. Essential for modern infrastructure.
Mail Exchange
Specifies mail exchange servers per RFC 5321.
Canonical Name
Creates domain aliases that point to other domain names.
Text Record
Contains verification data, SPF, DKIM, and DMARC policies.
Name Server
Indicates which authoritative servers manage the domain.
Who Uses DNS Lookup
Common use cases by role
System Administrators
- Troubleshoot connectivity with HTTP Status Checker
- Verify DNS propagation after changes
- Monitor email authentication (SPF, DKIM, DMARC)
- Audit DNSSEC security configurations
Web Developers
- Set up custom domains and subdomains
- Configure CDN and load balancer records
- Validate SSL certificate DNS verification
- Test redirects and IP resolution
Business Owners
- Verify email deliverability settings
- Monitor competitor domain configurations
- Plan domain migrations with minimal downtime
- Ensure website uptime across regions
Global DNS Servers
Public resolvers we query
Google Public DNS
World's most popular public DNS resolver with anycast routing.
Cloudflare DNS
Privacy-focused resolver with fast global response times.
Quad9
Security-focused DNS with real-time threat intelligence blocking.
OpenDNS
Enterprise-grade DNS with content filtering and analytics.
Frequently Asked Questions
Common questions answered
DNS propagation typically takes 24-48 hours globally, but changes can be visible within minutes on some servers depending on TTL settings. Our tool helps you monitor this process across multiple DNS providers.
Yes! Simply enter the full subdomain (like blog.example.com or api.example.com) to check its specific DNS configuration and records.
Authoritative nameservers provide official answers for domains they manage. Recursive resolvers cache responses and query other servers on your behalf. Our tool queries both types.
DNS queries are inherently public information. Our tool doesn't store your search history, and all queries are processed securely without logging personal data.
DNS servers may have different cached information or update frequencies. Comparing results across servers helps identify propagation issues and ensures global accessibility.
DNS Best Practices for 2026
Security and monitoring recommendations
Security
- ✓ Enable DNSSEC for cryptographic validation
- ✓ Use multiple authoritative nameservers for redundancy
- ✓ Implement SPF, DKIM, and DMARC records
- ✓ Optimize TTL values for performance
Monitoring
- ✓ Regular DNS health checks across global servers
- ✓ Monitor certificate expiration through CAA records
- ✓ Track DNS response times and availability
- ✓ Document all DNS changes for audit trails
Emerging DNS Trends in 2026
What's changing in the DNS landscape
DNS over QUIC (DoQ)
RFC 9250 defines DoQ, combining UDP speed with TLS security for lower latency than DoT.
AI Threat Detection
Machine learning now analyzes DNS patterns in real-time to detect malware, phishing, and data exfiltration.
Zero Trust DNS
Enterprises integrate DNS into Zero Trust architectures, enforcing device compliance and network segmentation.
IPv6-First Infrastructure
With IPv4 exhaustion accelerating, major providers now prioritize AAAA records and dual-stack resolution.
Command Line Alternatives
Terminal commands for power users
Windows (nslookup)
nslookup example.com
nslookup -type=MX example.com
nslookup example.com 8.8.8.8Linux / macOS (dig)
dig example.com
dig MX example.com
dig @1.1.1.1 example.com