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Table of Contents

Servers supporting DNS-over-TLS

The following servers are configured to support TLS on port 1021 and STARTTLS on port 53 for testing purposes.

Open resolver hosted by NLNetLabs:

  • NLNetLabs is kindly hosting an open resolver (running Unbound):
    • IP address: 185.49.141.38 and 2a04:b900:0:100::38
    • The server key file can be obtained by contacting willem@nlnetlabs.nl

Authoritative getdnsapi.net servers

  • The authoritative servers for getdnsapi.net are running a patched version of NSD:
    • IP address: 185.49.141.37 and 2a04:b900:0:100::37

Authoritative test server hosted by Verisign Labs:

  • Verisign Labs are kindly hosting a test zone on a server (running a patched version of NSD):
    • The zone is named starttls.verisignlabs.com and it has A, AAAA, and TXT records for names from 'A' to 'Z'. 

    • The IP address of the server is currently 173.255.254.151

    • Server key file is available to download here: nsd.key

    • The zone is signed

    • This server also supports TCP fast open

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How to Decode TLS packets in Wireshark

If you want to decode the DNS packets in Wireshark (use 1.12.1 or later) to get support TLSv1.2

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