- Your one source for DNS related tools!
Reverse IP Lookup
Find all sites hosted on a given server.

Domain / IP
Reverse Whois Lookup
Find domain names owned by an individual or company.

Registrant Name or Email Address
IP History
Show historical IP addresses for a domain.

Domain (e.g.
DNS Report
Provides a complete report on your DNS settings.

Domain (e.g.
Reverse MX Lookup  [NEW]
Find all sites that use a given mail server.

Mail server (e.g.
Reverse NS Lookup
Find all sites that use a given nameserver.

Nameserver (e.g.
IP Location Finder
Find the geographic location of an IP Address.

Chinese Firewall Test
Checks whether a site is accessible from China.

URL / Domain
DNS Propagation Checker
Check whether recent DNS changes have propagated.

Domain (e.g.
Is My Site Down
Check whether a site is actually down or not.

Domain (e.g.
Iran Firewall Test
Check whether a site is accessible in Iran.

Site URL / Domain
Domain / IP Whois
Lookup information on a Domain or IP address.

Domain / IP
Get HTTP Headers
View the HTTP headers returned by a domain.

DNS Record Lookup
View all DNS records for a specified domain.

Domain (e.g.
Port Scanner
Check if common ports are open on a server.

Domain / IP
Trace the servers between ViewDNS and a remote host.

Domain / IP
Spam Database Lookup
Determine if your mail server is on any spam lists.

Reverse DNS Lookup
View the reverse DNS entry for an IP address.

ASN Lookup
Lookup information on an ASN.

Autonomous System Number (e.g. 3456)
Test the latency of a remote system from ViewDNS.

Domain / IP
Test if any domain name is configured for DNSSEC.

Domain (e.g.
URL / String Decode
Convert a URL with '%##' values to a readable format.

URL / String
Abuse Contact Lookup
Find the abuse contact address for a domain name.

MAC Address Lookup
Determine the manufacturer of a network device.

MAC Address (e.g. 00-22-15-11-22-33)
Free Email Lookup
Determine if a domain provides free email addresses.

Domain (e.g.

All content © 2020
Feedback / Suggestions / Contact Us   Become an Affiliate