Dataset of DNS over HTTPS (DoH) Internet Servers
Description
The DoH Internet Servers dataset comprises a verified list of Internet servers offering DNS over HTTPS (DoH). The list was created through the aggregation of a previously existing, but incomplete, list of DoH servers. The servers in this dataset went through a verification phase where it was confirmed they were active and working as advertised. The verification was done between April 15th, 2021, and April 23rd, 2021. The dataset contains a total of 234 unique DoH servers, out of which 131 are over IPv4 and 103 over IPv6. The DoH servers belong to 52 unique Autonomous Systems and are associated with a total of 110 unique domain names.
Files
Steps to reproduce
The following public lists of existing DoH servers were used to create this dataset: - https://developers.google.com/speed/public-dns/docs/doh/json - https://blog.nightly.mozilla.org/2018/06/01/improving-dns-privacy-in-firefox/ - https://github.com/curl/curl/wiki/DNS-over-HTTPS - https://help.keenetic.com/hc/en-us/articles/360007687159-DNS-over-TLS-and-DNS-over-HTTPS-proxy-servers-for-DNS-requests-encryption - https://dnsprivacy.org/wiki/display/DP/DNS+Privacy+Public+Resolvers - https://kb.adguard.com/en/general/dns-providers - https://applied-privacy.net/services/dns/ - https://www.pacnog.org/pacnog24/presentations/DoT-DoH-DNS-Privacy.pdf - https://www.privacytools.io/providers/dns/ The verification of the DoH servers was performed using a custom-made Nmap script. The script is available at: https://github.com/cejkato2/dns-doh.nse Each server was verified using the following command: nmap -P0 -p443 --script=dns-doh-check <IP-address>