Update README.md

sinkingfeeling · Apr 5, 2023 · 61c8f2d · 61c8f2d
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-# subdomain_validator.py
+# subdomain_validator.py
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+This Python script generates a list of subdomains where is a known format such as us-001.domain.com through us-100.domain.com and then validates each subdomain by performing a DNS lookup to check if it resolves to a valid IP address. The validated subdomains are then written to an output file. This tool can be useful for generating a list of valid subdomains for use in security testing or other applications.