DNS Records

Whois Lookup, Domain Availability & IP Search - DomainToolswhois.domaintools.com

https://viewdns.info/viewdns.info

Reverse IP Lookup - MxToolboxmxtoolbox.com

reverse DNS information

SecurityTrails | SecurityTrails: Data Security, Threat Hunting, and Attack Surface Management Solutions for Security Teamssecuritytrails

Hurricane Electric BGP Toolkitbgp.he.net

https://searchdns.netcraft.com/searchdns.netcraft.com

Historical Records

DNS Historycompletedns.com

DNSDumpster - Find & lookup dns records for recon & researchDNSDumpster.com

Historical Records

DNS History Lookupsecgron

Kali Linux Tools

dnsenum | Kali Linux ToolsKali Linux

dnsrecon | Kali Linux ToolsKali Linux

GitHub - mschwager/fierce: A DNS reconnaissance tool for locating non-contiguous IP space.GitHub

Reverse DNS

Reverse IP - Find websites hosted on the same IP address, server or subnetdnslytics.com