See below for information on Frequently Asked Questions and Licensing information on the data sets.
- How many name servers do domains use?
- How many registered domains are there?
- What is a “validated” domain?
- Which authoritative DNS provider is most popular?
- Who is the most popular email provider for custom domains?
Table of licensing
Various data sources have been used for this project, which are listed below:
| Data Source | Licensing |
| se and nu zone files | The zone content is (C) Copyright 2019 The Swedish Internet Foundation. The license is Creative Commons Attribution 4.0 International, as per their publication site. |
| Common Search | Creative Commons Attribution 4.0 International |
| UK Government Data | Open Government Licence v3.0 |