Professional Network Tools
Check the health and configuration of DNS servers, mail servers, IP addresses and more. Instant analysis with actionable suggestions.
Checks DNS configuration, mail server health and provides improvement suggestions.
All Tools
DNS Report
Provides a complete health report on your DNS settings with improvement suggestions.
DNS Record Lookup
View all DNS records for a specified domain.
WHOIS Lookup
Get detailed WHOIS information for a domain.
Reverse IP Lookup
Find all sites hosted on a given server.
IP Location Finder
Find the geographic location of an IP address.
IP History
Show historical IP addresses for a domain.
Subdomain Discovery
Find all known subdomains for a domain.
DNS Propagation Checker
Check whether recent DNS changes have propagated worldwide.
Reverse NS Lookup
Find all sites that use a given nameserver.
Reverse MX Lookup
Find all sites that use a given mail server.
Global Ping Test
Ping a server from multiple locations worldwide.
Port Scanner
Check if common ports are open on a server.
Traceroute
Trace the network path between our servers and a remote host.
Is My Site Down
Check whether a site is down for everyone or just you.
Get HTTP Headers
View the HTTP headers returned by a domain.
Spam Database Lookup
Determine if your mail server is on any spam blacklists.
Reverse DNS Lookup
View the reverse DNS (PTR) entry for an IP address.
Reverse Whois Lookup
Find domains owned by an individual or company.
Chinese Firewall Test
Checks whether a site is accessible from China.
Iran Firewall Test
Checks whether a site is accessible from Iran.
DNSSEC Test
Test if any domain name is configured for DNSSEC.
ASN Lookup
Lookup details on an Autonomous System Number.
MAC Address Lookup
Determine the manufacturer of a network device.
Abuse Lookup
Find the abuse contact address for a domain name.
Free Email Test
Determine if a domain provides free email addresses.
URL Decode
Convert a URL with '%##' values to a readable format.