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.
Monitors the performance of your websites, DNS, and email servers along with blacklist monitoring. Get alerts by e-mail and SMS. Add 1 monitor for free. Plus free online network and DNS lookup tools.
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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 scan: Perform a port scan on the host 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!