About the SuperTool!
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information. And you'll have a chronological history of your results.
If you already know exactly what you want, you can force a particular test or lookup. Try some of these examples:
(e.g. "blacklist: 127.0.0.2" will do a blacklist lookup)
Command
Explanation
blacklist:
Check IP or host for reputation
smtp:
Test mail server SMTP (port 25)
mx:
DNS MX records for domain
a:
DNS A record IP address for host name
spf:
Check SPF records on a domain
txt:
Check TXT records on a domain
ptr:
DNS PTR record for host name
cname:
DNS canonical host name to IP address
whois:
Get domain registration information
arin:
Get IP address block information
soa:
Get Start of Authority record for a domain
tcp:
Verify an IP Address allows tcp connections
http:
Verify a URL allows http connections
https:
Verify a URL allows secure http connections
ping:
Perform a standard ICMP ping
trace:
Perform a standard ICMP trace route
dns:
Check your DNS Servers for possible problems New!
Feedback: If you run into any problems with the site or have an idea that you think would make it better, we would appreciate your feedback. Please leave us some Feedback.