I always use https://isup.me (https://downforeveryoneorjustme.com/) in these situations, to find out if I'm losing my mind. :)

Same, I ended up updating my pihole which was long overdue. Just finished, loaded up HN and it worked - "huh, wonder what the problem was with my pihole" I thought ... well it needed doing anyway.

All sites broke on my machine this morning.

I reset the router... and HN was still down.

<sniff>