Name:ViewDNS (Free)
URL:https://viewdns.info/
Description:All in one tool for IP address and DNS information
Utility:This free tool provides – 

• Reverse IP Lookup
• Reverse Whois Lookup
• IP History
• DNS Report 
• Reverse MX Lookup
• IP Location Finder
• Domain/ IP Whois
• Port Scanner
• DNS Record Lookup
• Reverse DNS Lookup
• Traceroute
• Abuse Contact Lookup
• Free Email Lookup
• MAC Address Lookup
• URL/ String Decode
• DNSSEC Test
• Ping
• ASN Lookup
• Spam Database Lookup
• Get HTTP Headers
• Is My Site Down
• Reverse NS Lookup
• DNS Propagation Checker