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Frequently asked questions

  • I am looking for a domain name registrant. Where can I look it up?

    The Whois is an easy-to-use tool for checking the availability of a .nl domain name. If the domain name is already taken, you can see who has registered it.

    On the page looking up a domain name you will find more information about what a domain name is, how the Whois works and how the privacy of personal data is protected. Alternatively, you can go straight to look for a domain name via the Whois.

  • I would like to transfer my domain name to another registrar. What is the procedure?

    To get your domain name transferred, you need the token (unique ID number) for your domain name. Your existing registrar has the token and is obliged to give it to you within five days, if you ask for it. The procedure for changing your registrar is described on the page transferring your domain name.

  • The details registered about me/my company are incorrect or out of date. How can I get them updated?

    To update the contact details associated with your domain name, you need to contact your registrar. Read more about updating contact details.

  • Why is my domain name in quarantine?

    When a domain name is cancelled, we aren't told the reason, so we can't tell you. You'll need to ask your registrar. The advantage of quarantine is that, if a name's cancelled by mistake, you can always get it back.

    One common reason is that the contract between you and your registrar says you've got to renew the registration every year. If you haven't set up automatic renewal and you don't renew manually, the registration will expire.

  • Ik heb een klacht over mijn provider/registrar. Kan ik daarvoor bij SIDN terecht?

    Wanneer je een klacht hebt over of een geschil met je registrar dan zijn er verschillende mogelijkheden om tot een oplossing te komen. Hierover lees je meer op pagina klacht over registrar. SIDN heeft geen formele klachtenprocedure voor het behandelen van een klacht over jouw registrar.

  • What conditions do I have to meet as a registrar?

    Would you like to be able to register domain names for customers or for your own organisation by dealing directly with SIDN? If so, you can become a .nl registrar. Read more about the conditions and how to apply for registrar status on the page becoming a registrar.

More frequently asked questions

SIDN Labs open-sources ENTRADA

We’re proud to announce that we are releasing our ENTRADA platform as an open source project. ENTRADA enables researchers and network engineers to analyse large amounts of network traffic, for instance to spot anomalies and threats. We originally developed ENTRADA to analyse DNS traffic and to further increase the security and stability of SIDN’s services for .nl (hence the acronym: “ENhanced Top-level Domain Resilience through Advanced Data Analysis”).

New DNSSEC charts on stats.sidnlabs.nl SIDN Labs' stats site extended DNS big data bij SIDN Labs

What is ENTRADA?

In a nutshell, ENTRADA is a “big data” platform designed to ingest and quickly analyse large amounts of network data. More technically, it is in fact a high-performance data-streaming warehouse (DSW).ENTRADA's ability to deliver such performance is due to two main features:

Please refer to our research paper for a performance evaluation and more details.

Who can use it?

  • Domain registries that are interested in developing DNS big data applications

  • Internet measurement researchers who are in need of a high-performance analytics platform

Main features

  • Performance: analyse the Parquet equivalent of 50 TB of pcap data in under 3.5  minutes, with a small 6-node cluster (4 data processing nodes).

  • Interface: benefit from easy SQL statements to analyse your data

  • Scalable: just add more nodes for faster processing

  • Built-in conversion of DNS/IP/TCP/UDP/ICMP network data to Parquet data

  • Open-source

.nl ENTRADA deployment

We have been using ENTRADA at SIDN Labs for the past year. It currently runs on a relatively small 6-node cluster (with 4 data-nodes), which contains about 2 years of DNS traffic from the .nl name servers. This equates to over 100 billion queries and responses. Every day, the database grows by a further 400 million queries.We use ENTRADA as an enabling platform to develop applications that aim at increasing the stability and security of the .nl internet zone and the global internet infrastructure. In ENTRADA, we store .nl zone DNS traffic and analyse it to detect anomalies and threats. It has many potential applications: for example, we are working on including algorithms for phishing detection and the identification of botnet traffic (https://irtf.org/raim-2015-slides/ic/moura.pdf)

Open source

We decided to make ENTRADA open source because we believe it might also benefit the larger network analysis community. By releasing ENTRADA as an open source project, we hope to jumpstart a community of ENTRADA developers and users. New applications based on ENTRADA can aid in further enhancing the stability and security of the internet as a whole.If you have any questions about deploying or running ENTRADA at your organisation, send an e-mail to entrada {at} sidnlabs.nl.

For more information see the ENTRADA project-site at: http://entrada.sidnlabs.nl/

Article by:

Maarten Wullink

Research engineer