Historic datasets (from 2014 onwards) for the .nl TLD. Datasets are available in JSON format.

Datasets cover information about:

• DNS
  • Domain Names
  • Query Type
  • Response Codes
  • IPv6 Support
• Resolvers
  • Location
  • Number of IP addresses
  • Validating Resolvers
  • Popular Networks
  • Port Randomness
• DNSSEC
  • Validating Queries
  • DANE
  • Used Algorithms
• Mail
  • Mail Resource Records (RRs)
  • SPF Information

APNIC gathers many statistics and offers them on their website. However, they provide way more data than it might initially look like, since many of the datasets are not linked from their main page.

• BGP announcements by region
• Customers by ASN
• DNSSEC validation rate by region
• IPv4 vs. IPv6 RTT Comparison by region
• IPv6 Customers by ASN
• IPv6 usage by region
• Statistics about their ad-based measurement system
• Use of open DNS resolver by region

https://www.statdns.com/resources/

Contains lists for DNS servers, libraries, tools, and other resources.

https://linuxmafia.com/kb/Network_Other/dns-servers.html

List of maintained and unmaintained DNS servers, including descriptions for each of them.

https://dnsinstitute.com/implementations/

Short overview of open-source projects for authoritative and recursive servers and development libraries.

The website is an ongoing project by Knot DNS to measure the performance of various DNS servers. Four open-source servers are tested, namely BIND, Knot DNS, NSD, and PowerDNS. The benchmark includes different zone configurations matching to root zones, TLD zones, or hosting zones as well as different DNSSEC configurations.

The DNS Privacy Project aims to improve privacy for users on the Internet.

The project is split into different groups working on DNS privacy:

• IETF DPRIVE Working Group
• NDSS DNS Privacy Workshops

The project focuses mostly on DNS over TLS. They provide overviews for the implementation status, configuration for test servers, and ongoing server monitoring, which features they provide.

Check My DNS

Browser-based DNS resolver quality measurement tool. Uses the browser to generate many resolver queries and tests for features they should have, such as EDNS support, IPv6, QNAME Minimization, etc.

This test is also available as a CLI tool: https://github.com/DNS-OARC/cmdns-cli

DNSSEC Debugger

Analyze DNSSEC deployment for a zone and show errors in the configuration.

DNSViz

Gives an overview of DNSSEC delegations, response sizes, and name servers.

GitHub: https://github.com/dnsviz/dnsviz

DNS X-Ray

The website has an online test, which performs DNS lookups. These DNS lookups test if certain resource records are overwritten in the cache. The tool can then determine what DNS software is used, where the server is located, how many caches there are, etc.

EDNS Compliance Tester

Test name server of zones for correct EDNS support.

The Transitive Trust and DNS Dependency Graph Portal

Shows the trust dependencies in DNS. Given a domain name, it can show how zones delegate to each other and why. The delegation is done between IP addresses and zones.

Root Canary Project

The project used to monitor the first root KSK key rollover. Now it contains the paper "Roll, Roll, Roll your Root: A Comprehensive Analysis of the First Ever DNSSEC Root KSK Rollover" describing the experiences of the first root KSK rollover

Additionally, it includes a tester for DNSSEC algorithm support, which shows the algorithms supported by the currently used recursive resolver. It provides statistics about support for DNSSEC algorithms. It has a web-based test to test your own resolver and provides a live monitoring using the RIPE Atlas.

DNSSEC algorithms resolver test

The Internet Society published maps showing the distribution of IPv6 support worldwide. The maps are available also with historic data, but are only updated sporadically. More current maps and CSV files are available on the mailing list.

Regularly updated reports about the current DNSSEC deployment. Contains information per TLD and global distribution.

• https://rick.eng.br/dnssecstat/
• https://stats.dnssec-tools.org/

The website keeps track of all DNSSEC keys in the top-level domains (TLDs) and informs when the signatures are about to expire. The time before some RRSIGs expire is color coded. It also shows error which happened during validation.

Hello DNS is a project to write an easy to read/understand summary of the DNS specification. It provides an entry point to understand DNS given that the full DNS specification is easily 2000 pages in size.

ICANN tracks the general health of the DNS ecosystem and related ecosystems. The data is updated irregularly, but historic data is available. The collected data covers eight major topics:

1. M1: inaccuracy of Whois Data
2. M2: Domain Name Abuse
3. M3: DNS Root Traffic Analysis
4. M4: DNS Recursive Server Analysis
5. M5: Recursive Resolver Integrity
6. M6: IANA registries for DNS parameters
7. M7: DNSSEC Deployment.
8. M8: DNS Authoritative Servers Analysis

Each topic has too many sub categories to list here.

The website collects major outages caused by broken DNSSEC deployments in the wild. It tracks root and TLD errors and some selected websites. Each outage is timestamped and has some description about the problem. The entries contain information from the VeriSign DNSSEC debugger and DNSViz.

The DNS workbench is a testbed which allows experimentation how different authoritative DNS servers answer to queries.

It covers five open-source authoritative servers, namely Bind9, Knot, NSD4, PowerDNS, and Yadifa. The workbench contains zones to test the support for many different resource record (RR) types, DNSSEC validation and how invalid zones are managed, delegations, zone transfers, and potentially more.

Find the project on GitHub.

The blog post about Subdomain Enumeration in the APNIC blog provides a great overview of the techniques, defenses, and tools for it. Subdomain enumeration is the act of learning available subdomains in a zone using DNSSEC. This is with NSEC records and somewhat harder with NSEC3, due to hashing of names. The blog goes explains how online signing can combat subdomain enumeration, using the white lies or the black lies strategies. Lastly, it links to tools for performing these attacks.

The TLD Apex History is an ICANN project to gather DNSSEC related records for all TLDs.

Further information about the project can be found in this presentation.

Dnsthought lists many statistics about the resolvers visible to the .nl-authoritative name servers. The data is gathered from the RIPE Atlas probes. There is a dashboard which only works partially.

Raw data access is also available.