Data shown on this website has three different sources. First, DNS query data is collected using ENTRADA, a tool for analysing very large volumes of DNS data. Also, data has been collected using DMAP, a crawler and classification tool. Both tools are developed by SIDN Labs. Additionally, data is collected by OpenINTEL, a measurement platform to capture daily snapshots of the state of large parts of the global Domain Name System. OpenINTEL is a joint project of the University of Twente, SURF, NLnetLabs, and SIDN Labs.
- Resolver locations
- Queries from validating resolvers per AS
- Queries from validating resolvers in Dutch ASs
- Queries from validating resolvers in Dutch ASs, over time
- Queries from validating Google and OpenDNS resolvers
- Source port randomness
- Insecure resolvers in Dutch ASs
- Algorithms used
- Bogus domains
SIDN statistics are made available under the following licence: Creative Commons Attribution 4.0 International License.
Although we take great care when developing our experimental services, we cannot guarantee that this service will always function properly. Use of the service is entirely at the user's risk. SIDN is not liable for any damages suffered as a consequence of using experimental SIDN services. We reserve the right to withdraw this service at any time and without prior notice.