dnsvalidator

--silentIf set then only successfully resolved servers will be displayed and banners and other information will be redacted.

-tSpecify a target DNS server to verify.

-threadsSpecify the maximum number of threads to run at any one time (DEFAULT:5)

-timeoutSpecify a timeout value in seconds for any single thread (DEFAULT:600)

--no-colorIf set then any foreground or background colours will be stripped out

-eSpecify a target exclusion.

-tLSpecify a list of targets or a URL to a list of targets

-qSpecify a resolver query to use (default:dnsvalidator)

-eLSpecify a list of targets or a URL to a list of targets to exclude.

-rSpecify a root domain to compare to. Must be non-geolocated or most resolvers will fail.