With a .be domain name it can take at most half an hour before the changes are visible, with .vlaanderen or .brussels it takes a few minutes. This is because we perform automatic checks before we activate new or changed domain names. This way, we make sure that the published list of domain names (the zone file) is always correct, complete and validated. Read more about it. It takes a maximum of 24 hours for the change to be spread across the internet.