ViewDNS.info
Collection of free DNS, WHOIS, reverse-IP and network lookup tools.
ViewDNS.info lists free tools including Reverse IP Lookup (find all sites hosted on a given server), IP History (historical IP addresses for a domain), Subdomain Discovery (find all known subdomains for a domain) and DNS Record Lookup (view all DNS records for a specified domain). It also lists a Port Scanner that checks if common ports are open on a server, a Global Ping Test from multiple locations worldwide and a DNS Propagation Checker.
Official site: https://viewdns.info
Last verified 2026-10-12.
Description rewritten from the vendor's own pages and checked against them. How entries are checked.