| command | description |
|---|---|
| smtp: | Test mail server SMTP (port 25) |
| blacklist: | Check IP or host for reputation |
| 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 |
| soa: | Get Start of Authority record for a domain |
| ping: | Perform a standard ICMP ping |