Sorry to “disagree” with retic, and i’m on my cell and i am a lazy typer on cells, but no, it’s not the isp that assigns the dns when set to automatic (on a device _behind_ a router. No way for a isp to assign something at this level)
We all (most of us, connecting thru a router) get our _internal_ ip and dns ( and the ip of “our” router) from our router via a protocol called dhcp. If you set your router’s dhcp settings to distribute cloudflare or whatever as dns via dhcp the devices in your network will use this dns when set to auto. You can always override what dhcp offers you by disabling automatic and setting a dns ip for each individual device on your network. Of course devices (like roku once did, or still is, idk) where you cant set your dns at all might use something else - not what your router offers thru dhcp
If you dont change your router‘s setting then whatever dns your isp assigns to your router will either be forwarded to your devices when on auto, or, in most cases, the router will advertise itself as a dns and will simply relay every dns request it hasn‘t resolved before to your isp‘s dns. (Which should be the fastest version, because your router is in your home, ie almost no latmcy, and the isp‘s dns as upstream should be fastest compared to other dns servers outside your isp‘s network)
So essentially most routers have two „dns settings“ - the one they use themselves, usually in the connection/ip settings and one in the dhcp settings which is the one they offer to the clients in your network (if these devices use it or something else is a different story)
That being said - dns merely resolves the site or service you want to use to an ip address. This address is unique and every dns will give you the same address (unless manipulated). The actual connection to this address is always done by your isp unless you use a proxy or vpn (in which case the connection to the proxy is handles thru your isp, and the connection to your destination is handled thru the proxy/vpn). I.e. it just resolves something like „woita.de“ to something like 88.198.119.21. that‘s the way the internet operates. Your client will ask your router to connect to that numerical address, then the router will ask your isp (as the closest peer), then it will determine what network to ask to connect to that address, then that network will determine ...... until you reach my server, and then it goes all the way back. (and forth)
So dns was simply invented because typing 88.198... is less convenient (and memorable) than woita.de
Well, for a cell-typed post that was long.
Sorry for me wise-...-ing. Might be the florida heat or the beers or bourbons i had.
So, yes, we made it, but entering the us in charlotte was no fun this time
Immigration guy accused us of abusing our greencards because we dared to vacation and planned on heading to germany after a week. (Until january when we plan on coming for good) Long story. Went to customs today and we should be alright. We'll see the next time we come to the us. So, sorry bronze, but not on good terms with nc atm. Guy was indian with a worse accent than me, so who knows what he did to get his greencard :/
Rant and wiseassing over. Good night army