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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  • The details registered about me/my company are incorrect or out of date.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

IPv4 address block prices continue to fall

IPv4 assets desondanks nog voldoende onderpand voor bedrijfsleningen

IPv4 concept
  • Friday 23 May 2025

IPv4 address block prices continue to fall. Having been roughly 35 dollars per address a year ago, the going rate has dropped towards the 30-dollar mark. For the biggest address blocks, the price drop has been quite dramatic: from nearly 50 dollars per address for a /16 block a year ago to little more than 20 dollars now. So those blocks have lost more than half their value in the space of a year.

IPv4 assets nevertheless appear to retain sufficient value to be acceptable as collateral for corporate loans.

The ongoing decline in IPv4 address prices is revealed by the sales figures published by online marketplace IPv4.Global. According to that platform, record numbers of addresses are available to purchase and to lease.

Gemiddelde prijzen per adres voor IPv4-adresblokken.

Figure 1: Average prices per address for IPv4 address blocks. [Source: IPv4.Global]

Peak IPv4 is now behind us

Although IPv4.Global talks about a very active buyers’ market and points to the pivoting economy as the cause, it’s debatable whether IPv4 address blocks do in fact remain a good investment. When prices began to dip from 2022, we asked whether we were past peak IPv4. We argued that, as the adoption of IPv6 slowly but surely continued and the importance of IPv4 declined, there must come a point where the value of IPv4 addresses goes into irreversible decline. As the following graph shows, prices have been going down consistently since 2022.

De prijzen van IPv4-adressen dalen na 2022 structureel.

Figure 2: Prices of IPv4 addresses have been in structural decline since 2022. [Source: IPv4.Global]

Prices double, then halve

The going rate for /16 and larger blocks is now back to its 2020 level. At that time, we observed that Amazon had 100 million IPv4 addresses worth no less than 2.5 billion dollars.

De prijzen van /16-blokken en groter zijn weer terug op het niveau van 2020.

Figure 3: The going rate for /16 and larger blocks is now back to its 2020 level. [Source: IPv4.Global]

In 2020, Vincentas Grinius, CEO of London-based hosting provider Heficed, predicted that the price of an IPv4 address would double in the next five years. However, he also warned that the window for exploiting that value would be limited. Grinius envisaged the value of IPv4 addresses peaking within 10 years, and then starting to fall. The market has since followed the path he predicted, but considerably more quickly.

IPv4-secured corporate loans

Despite IPv4 address blocks slowly declining in value over the last few years, IPv4.Global is apparently still happy to accept them as collateral for corporate loans as large as 100 million dollars. According to The Register, IPv4.Global recently made its first IPv4-secured loan to the owners of a data centre that wanted to expand its cloud offering. If the borrower is unable to repay the loan on time, IPv4.Global will be entitled to sell the pledged address blocks (on its own platform, needless to say).

The product offered by IPv4.Global is therefore similar to the IPv4-backed securities issued by Cogent last year. Using that vehicle, the US internet service provider was able to raise 200 million dollars, repayable over five years. However, with address prices in structural decline, it remains to be seen how much longer such constructions will remain viable.

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