sfw.scaleway-fr is a free public DNS resolver accessible over the DNSCrypt protocol.
To enforce safe search results on Google, Bing, Youtube, simply use dnscrypt-proxy's cloaking feature.
For time-based rules, additional filters, and whitelisting, see the dnscrypt-proxy documentation on filters.
sfw.scaleway-fr is currently hosted on a 1-XS server generously donated by Scaleway.
Confirm that your settings are correct by resolving
$ dig resolver.dnscrypt.infoor
$ drill resolver.dnscrypt.info
This query returns the IPv4 or IPv6 address of a DNS resolver used by your device.
sfw.scaleway-fr IP address is
sfw.scaleway-fr is not affiliated with Scaleway. The service is maintained by Frank Denis
<jedisct1 [at] dnscrypt [.] info>