...half that time before i realised it was only half the devices on our network, too: spent a long while chasing DNS poisoning, then the other half patching devices from a mobile hotspot...
...in the end, i never actually figured out why only half my devices couldn't resolve half of the internet, but a hard-power-cycle of our fiber modem resolved the issue...
...i dumped them like a rock shortly after the pacific bell acquisition a quarter-century ago; sadly, our current ISP was my wife's unilateral choice...