Filters
DNS Blocklists
Click "Add blocklist"
Click "Add a custom list"
Where it says: "Enter name" enter: "oisd full" (without quotes)
Where it says: "Enter a URL or an absolute path of the list" enter: "https://abp.oisd.nl" (without quotes)
Click "Save"

Group Management
Adlists
Where it says: "Add a new adlist" in the input field under "Address" enter "https://dbl.oisd.nl" (without quotes)
Click "Add"

Enabled by default :)

Settings
DNS Filtering
DNS requests blocking
+ NEW DNS FILTER
Where it says "URL or Path" enter "https://abp.oisd.nl/basic/" (without quotes)
Tap IMPORT
Where it says "Enter DNS Filter Name" enter "oisd basic" (without quotes)
Tap ADD

Settings ("Cog"-icon in the bottom) (Might need a second tap to actually go to settings page)
General
Enable "Advanced mode"
Go back to settings ("Cog"-icon in the bottom)
DNS Protection
Enable (if not already enabled)
Toggle OFF to ON
Tap OK then Allow to install a local VPN profile
DNS Filtering
DNS Filters
Add a filter
Enter filter URL: "https://abp.oisd.nl/basic/" (without quotes)
Tap ADD

Tap the middle block where it says "# up-to-date sources"
Tap the plus sign in the bottom right
Where it says "Label" enter: "oisd basic" (without quotes)
Where it says "Location" enter: "https://hosts.oisd.nl/basic/" (without quotes)
Tap the checkmark in the top right
Tap "Apply" in the bottom right

Tap on "HOSTS"
Tap the plus sign in the bottom right
Where it says "Title" enter: "oisd basic" (without quotes)
Where it says "Location" enter: "https://dbl.oisd.nl/basic/" (without quotes)
Tap the checkmark in the top right

NOTE: oisd is domain blocklist, not a content-filter-list. It is therefore NOT a replacement for the default filters of uBlock, so leave those enabled!

Left-click the uBlock Origin icon in your browser
Click the "Cogs"-icon (opens the dashboard)
On "Filterlists"-page, scroll down and tick the box where it says: "Import"
Where it says; "One URL per line. Invalid URLs will be silently ignored.", type: "https://abp.oisd.nl/" (without quotes)
In the top click on "Apply Changes".

Find the Adguard Browser Extension icon in your browser, and click it
Click the Cog-icon in the top right (Adguard Settings)
On the left, click "Filters"
At the bottom, click "Custom"
Click "Add custom filter"
Where it says "Enter URL or file path" enter: "https://abp.oisd.nl/" (without quotes)
Click "Next"
Click "Subscribe"

Open your configuration screen ( https://my.nextdns.io )
Click tab "Privacy"
Under "Blocklists" click the button "ADD A BLOCKLIST"
Scroll till you find "oisd" and click on "ADD" to the right of it

Go to Server Settings > Blocklists
Click "Manage Blocklists"
Check the box in front of "OISD Blocklist Full"

Free:

Legacy IPv4	Legacy IPv6	DNS-over-HTTPS + DNS-over-TLS
76.76.2.32 76.76.10.32	2606:1a40::32 2606:1a40:1::32	https://freedns.controld.com/x-oisd x-oisd.freedns.controld.com

Source

How to setup?

Go to https://kb.controld.com/en/tutorials
Note: Where you are told to input IPv4, IPv6 or DoH/DoT info, use the info above instead.

Paid users enable oisd here:

Go to Filters (https://controld.com/control-panel/filters)
Click "3rd Party Filters"
Enable "OISD – Full"

Setup guide here

Open your configuration page ( https://rethinkdns.com/configure )
Scroll till you find "OISD FULL" and click on "ADD" to the right of it