Maintains a list of IPv4 DNS servers by verifying them against baseline servers, and ensuring accurate responses.
| Argument | Description |
|---|---|
| (stdin) | Pipe target lists from another application to verify. |
| -t | Specify a target DNS server to verify. |
| -tL | Specify a list of targets or a URL to a list of targets |
| -e | Specify a target exclusion. |
| -eL | Specify a list of targets or a URL to a list of targets to exclude. |
| -r | Specify a root domain to compare to. Must be non-geolocated or most resolvers will fail. |
| -q | Specify a resolver query to use (default:dnsvalidator) |
| -threads | Specify the maximum number of threads to run at any one time (DEFAULT:5) |
| -timeout | Specify a timeout value in seconds for any single thread (DEFAULT:600) |
| -o | Specify an output file to write successful output to. |
| --no-color | If set then any foreground or background colours will be stripped out |
| --silent | If set then only successfully resolved servers will be displayed and banners and other information will be redacted. |
| -v | If set then verbose output will be displayed in the terminal. |
Install using:
$ pip3 install -r requiremets.txt
$ python3 dnsvalidator.py -tL https://public-dns.info/nameservers.txt -threads 20 -o resolvers.txt