Name		Name	Last commit message	Last commit date
.github/workflows		.github/workflows
public_dns_servers		public_dns_servers
LICENSE		LICENSE
README.md		README.md
nameservers.txt		nameservers.txt
nameservers_by_asn.json		nameservers_by_asn.json
poetry.lock		poetry.lock
pyproject.toml		pyproject.toml

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public-dns-servers

The purpose of this repository is to keep an up-to-date list of the latest KNOWN-GOOD public DNS servers. nameservers.txt is updated weekly via a CI/CD script that does the following:

Pulls raw list of public nameservers from https://public-dns.info/
Interrogates each DNS server to see if it is "worthy". Each DNS server MUST:
- Respond within 1 second
- Respond accurately to both A and AAAA queries
- NOT respond to a NONEXISTENT query (helps to weed out bogus nameservers)
Compiles the worthy nameservers into nameservers.txt

The result is a list that's suitable to be used for any automated task, OSINT or otherwise. Enjoy!

Used by BBOT's massdns module.