Subdomain Lookup – Find DNS Hosts & IP Details
Subdomain Lookup – Discover Active Hosts & DNS Records
The FindMyDNS.net Subdomain Lookup tool helps detect publicly available subdomains under a specific domain. It retrieves DNS records, hostnames, IP mappings and helps sysadmins analyze domain infrastructure, detect vulnerability exposure, and identify services running on different subdomains.
What is Subdomain Lookup?
Subdomain lookup helps you detect additional websites and services running under a main domain (e.g., mail.example.com, api.example.com). This is crucial for network mapping, penetration testing, and security analysis.Why Are Subdomains Important?
Identifying subdomains helps uncover hidden services, detect potential vulnerabilities, and verify if old or unused services are still publicly accessible.How to Use the Tool
Enter a domain name and click search. Our tool scans and reveals active subdomains, linked DNS records, and associated IP addresses in real-time.Common Use Cases
• Network mapping & infrastructure audit• Cybersecurity reconnaissance
• Cloud resource visibility
• Domain maintenance & clean-up
• Penetration testing for hidden services
Why Choose FindMyDNS Subdomain Lookup?
Our scanner checks authoritative DNS servers without using outdated cached data. Results are delivered instantly with accurate IP mapping, making it a reliable tool for sysadmins, security analysts, and developers.Need to verify SPF, DKIM, or DMARC records for email delivery? Try our Email Authentication Checker
Want to check reverse DNS configuration? Use our PTR Lookup Tool
Troubleshooting network latency? Run a Ping Test
Need IP location or network details? Check using IP Tracer Tool
For domain ownership details, try our WHOIS Lookup Tool
Ensure your website is secure—run an SSL Certificate Status Check.
Check the IP address or domain name is blacklisted Check IP address is blacklisted.