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Our scanner checks authoritative DNS servers without using outdated cached data.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 DNS resolution details? Try the DNS Record Lookup Tool
Want to check domain ownership? Use the WHOIS Lookup Tool
Looking to test connectivity and latency? Try our Online Ping Test
Need to analyze reverse mappings? Use the RDNS / PTR Lookup Tool
Want to verify SSL/TLS certification status? Try our SSL Certificate Checker
Need additional diagnostic tools? Try our DNS Lookup or WHOIS Checker
Quickly detect blacklist problems that may harm your website or email credibility Start blacklist scan.