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DNSDigger is a powerful domain reconnaissance tool that automates DNS lookups, ASN retrieval, CIDR resolution, IP range extraction, and reverse DNS lookups—streamlining domain intelligence gathering in one script.
PTRex is a Bash script for performing reverse DNS (PTR) lookups on single IPs, CIDR ranges, or IP lists. It uses getent hosts, supports parallel execution for speed, and filters results to show only successful lookups.