├── .github
    └── workflows
    │   └── main.yml
├── README.md
└── resolvers.txt


/.github/workflows/main.yml:
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 1 | name: CI
 2 | 
 3 | on:
 4 |   schedule:
 5 |   - cron: "0 8,20 * * *"
 6 | 
 7 | jobs:
 8 |   build:
 9 |     runs-on: ubuntu-latest
10 |     steps:
11 |     - uses: actions/checkout@master
12 |       with:
13 |         token: ${{ secrets.GITHUB_PERSONAL_TOKEN }}
14 |     - name: dnsvalidator
15 |       run: |
16 |         git clone https://github.com/vortexau/dnsvalidator
17 |         cd dnsvalidator
18 |         pip3 install wheel
19 |         pip3 install setuptools
20 |         sudo python3 setup.py install
21 |         rm ../resolvers.txt
22 |         dnsvalidator -tL https://raw.githubusercontent.com/janmasarik/resolvers/master/resolvers.txt -threads 5 -o ../resolvers.txt
23 |         sed -i '/^$/d' ../resolvers.txt
24 |     - name: Commit resolvers.txt
25 |       run: |
26 |         git config --local user.email "action@github.com"
27 |         git config --local user.name "GitHub Action"
28 |         git add resolvers.txt
29 |         git commit -m "Update resolvers" -a
30 |         git push "https://janmasarik:${{ secrets.GITHUB_PERSONAL_TOKEN }}@github.com/janmasarik/resolvers.git" HEAD:master --follow-tags
31 | 


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/README.md:
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 1 | # resolvers.txt
 2 | Fresh list of periodically validated public DNS resolvers.
 3 |  
 4 | ```bash
 5 | $ wget https://raw.githubusercontent.com/janmasarik/resolvers/master/resolvers.txt
 6 | $ massdns -r resolvers.txt domains_to_resolve.txt
 7 | ```
 8 | 
 9 | ## Why?
10 | People need a list of *good* resolvers (e.g. for [massdns](https://github.com/blechschmidt/massdns)). Why spend all that traffic on refreshing a private list? Let's use and improve this one! ᕕ( ᐛ )ᕗ
11 | 
12 | ## How it's done 
13 | Validation is done using [dnsvalidator](https://github.com/vortexau/dnsvalidator/) every 12 hours using **Github Actions** that push the fresh results back to this repository. 
14 | 
15 | ## Thanks
16 | - [@vortexau](https://twitter.com/vortexau) and [@codingo_](https://twitter.com/codingo_) for creating [dnsvalidator](https://github.com/vortexau/dnsvalidator)!
17 | - GitHub for *hosting* this on GitHub Actions! :heart:
18 | 


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/resolvers.txt:
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1 | 129.250.35.251
2 | 208.67.222.222
3 | 8.8.8.8
4 | 208.67.220.222
5 | 1.0.0.1
6 | 8.8.4.4
7 | 


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