IP Address and Domain Exploration Tool
This code runs ipxer.com.
ipxer is a simple web API which provides JSON responses for common public DNS queries, IP information from Team Cymru, IP geolocation data from MaxMind GeoLite2 City, and IP threat intelligence from Alien Labs Open Threat Exchange and IBM X-Force Exchange. A simple front-end is provided to facilitate quick exploration of information.
Sometimes interesting things can be found: https://ipxer.com/dns.google.
Domains: /api/{a,aaaa,mx,ns,txt}/{example.com}
IPs: /api/{ipv4,ptr}/{8.8.8.8}
Alien Labs Open Exchange (OTX) IP Reputation: /api/ipv4/otx/{8.8.8.8}
IBM X-Force Exchange IP Reputation: /api/ipv4/xforce/{8.8.8.8}