Perform a DNS lookup on the given IP address or hostname.
DNS Lookups for DNSSEC Resource Records.
Check an IP address or hostname of a mail server against mutiple real-time blackhole lists.
Check a hostname against multiple unsolicited URI lists.
Perform a mail server (SMTP) test against the given IP address or hostname.
Validate the SPF record listed in DNS (TXT/SPF record) for the given domain.
Check to see what other websites are hosted on the same IP address of the given hostname.
HTTP Headers Check
Get a list of response headers for the given HTTP/HTTPS url.
Perform a standard ICMP ping against the given IP address or hostname.
Perform a standard UDP trace route against the given IP address or hostname.
Get domain registration information. Provide the domain name you want to look up.
IANA Whois Lookup
Perform a whois lookup against a Regional Internet Registry.