Interesting, added my ISP to my previous comment (Vodafone). Do you have a lot of stuff you use daily that goes away during the games? Personally the only thing that seems to stop working is Docker Hub, everything else seems OK, trying to figure out if it's just my ISP that is lenient or what's going on...
am i understanding correctly that Docker Hub is inaccessible in Spain during football matches? do sports get bandwidth priority?
It changes depending on the day. But yes, some days it's really a lot (affecting forums, news sites, etc.). I think Movistar applies stronger blocks than most for some reason, in fact I've been seriously consider changing ISP for that reason but I'm too lazy (plus in 12 years with them I think I've had a single outage which was solved in an hour or two, so even if I oppose them morally, it's convenient to stay...)