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

Domain / IP
Reverse NS Lookup    [NEW!]
Find all sites that use a given nameserver.

Nameserver (e.g.
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.
DNS Propagation Checker
Check whether recent DNS changes have propagated.

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

Domain / IP
IP Location Finder
Find the geographic location of an IP Address.

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

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

Domain / IP
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
Google Pagerank Checker
Instantly check the Google Pagerank of any domain.

Domain (e.g.
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.
Reverse DNS Lookup
View the reverse DNS entry for an IP address.

Trace the servers between ViewDNS and a remote host.

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

Test if any domain name is configured for DNSSEC.

Domain (e.g.
ASN Lookup
Lookup information on an ASN.

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

Domain / IP
MAC Address Lookup
Determine the manufacturer of a network device.

MAC Address (e.g. 00-22-15-11-22-33)
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.

Free Email Lookup
Determine if a domain provides free email addresses.

Domain (e.g.

All content 2015
Feedback / Suggestions   Advertise on   Become an Affiliate