http://isitdns.com/

Thanks for that; the formatting is broken.

I’ll try and figure out how to fix it (it was formatted for the “site that shall not be named”)

This will be the device that helps reduce the amount of ads and blocks telemetry data on devices (mobile device / streaming box / etc) that you can’t utilize some or all of the traditional blocking methods (hosts files / browser plugins / etc). The Pi can also have additional software installed (I recommend PiVPN) to extend these blocking capabilities **securely** when you’re not on your “home” wifi.

When it comes to a “secondary”DNS… [there is nothing like a primary and secondary DNS server. These indications are quite misleading but many systems adopted it this way. Pihole only list the DNS servers as primary and secondary, because this is what the providers write on their pages. The bad phrasing is supported especially by how Windows handles it.](https://discourse.pi-hole.net/t/primary-vs-secondary-dns/1536/2)

[Most operating systems implement DNS servers as alternatives, not as fallbacks, i.e. they will query any of both servers from time to time, so it is quite likely that you will loose your Pi-hole filtering capabilities (at least partially) [if you specify a secondary DNS server on your network].](https://discourse.pi-hole.net/t/secondary-dns-server-for-dhcp/1874)

The **ONLY** DNS server you should have set on your network is a/the PiHole(s).

When it comes to a “secondary”DNS… [there is nothing like a primary and secondary DNS server. These indications are quite misleading but many systems adopted it this way. Pihole only list the DNS servers as primary and secondary, because this is what the providers write on their pages. The bad phrasing is supported especially by how Windows handles it.](https://discourse.pi-hole.net/t/primary-vs-secondary-dns/1536/2)

[Most operating systems implement DNS servers as alternatives, not as fallbacks, i.e. they will query any of both servers from time to time, so it is quite likely that you will loose your Pi-hole filtering capabilities (at least partially) [if you specify a secondary DNS server on your network].](https://discourse.pi-hole.net/t/secondary-dns-server-for-dhcp/1874)

The **ONLY** DNS server you should have set on your network is a/the PiHole(s).

When it comes to a “secondary”DNS… [there is nothing like a primary and secondary DNS server. These indications are quite misleading but many systems adopted it this way. Pihole only list the DNS servers as primary and secondary, because this is what the providers write on their pages. The bad phrasing is supported especially by how Windows handles it.](https://discourse.pi-hole.net/t/primary-vs-secondary-dns/1536/2)

[Most operating systems implement DNS servers as alternatives, not as fallbacks, i.e. they will query any of both servers from time to time, so it is quite likely that you will loose your Pi-hole filtering capabilities (at least partially) [if you specify a secondary DNS server on your network].](https://discourse.pi-hole.net/t/secondary-dns-server-for-dhcp/1874)

The **ONLY** DNS server you should have set on your network is a/the PiHole(s).

You’re welcome. It really helped us.

My recommendation is to give the book “Precious Little Sleep” a read.

https://www.preciouslittlesleep.com/

My friend Anna mentioned at dinner the other night something about her archive having books; maybe she has it for loan/purchase.