Whois unavailable on 15 August 2017 06.00 to 08.00

Maintenance scheduled for 15 August

The Whois is temporarily unavailable while maintenance is carried out.

Due to maintenance work, the Whois on our website – the tool for checking the availability of a domain name – will be unavailable from 06:00 to 08:00 on Tuesday 15 August.   Please accept our apologies for any resulting inconvenience.


During the maintenance window, we will be replacing our load balancers and upgrading our firewall and software to the recommended patch level.

Onderhoud en storingen

Any questions?

Feel free to get in touch if you've got a question. You can reach us on working days between 8am and 6pm (Dutch time) by calling +31 26 352 5555 or mailing support@sidn.nl.


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