One domain messing up all statistics

General
3

If you let Pi-hole do DHCP services for your network instead of your router, you can configure it to assign different DNS IP's to particular clients based on their MAC address.
In below example I configure my Samsung phone with MAC 0C:2F:B0:XX:XX:XX to be assigned Cloudflare's DNS IP's 1.1.1.1 & 1.0.0.1:

pi@ph5a:~ $ sudo nano /etc/dnsmasq.d/99-my-settings.conf
dhcp-host=0C:2F:B0:XX:XX:XX,set:cloudflare
dhcp-option=tag:cloudflare,option:dns-server,1.1.1.1,1.0.0.1

pi@ph5a:~ $ pihole-FTL --test
dnsmasq: syntax check OK.

pi@ph5a:~ $ sudo service pihole-FTL reload
pi@ph5a:~ $

While the rest of my clients still get my Pi-hole hosts 10.0.0.2 & 10.0.0.4 assigned for DNS:

pi@ph5b:~ $ pihole-FTL dhcp-discover
[..]
* Received 324 bytes from eth0:10.0.0.2
[..]
   dns-server: 10.0.0.2
   dns-server: 10.0.0.4

Below the man pages which describes tagging "set:cloudflare" and advertising DHCP options: