Seems the blocks aren't in effect yet, I'm on Spanish ISP (Vodafone) here and can still access polymarket.com and kalshi.com. Traditionally, Spanish ISPs tend to do DNS blocks yeah, at least when it comes to long-lasting piracy and other "clearly illegal stuff" like Women's rights.
It not until recently ISPs got asked to do blocks by IP, as Cloudflare wasn't responding to legal takedown requests, hence we currently seem to experience both types of blocking, but the IP-based blocking happens a few hours per week, the other ones are permanent.
I'm on Movistar and can't access it without my trusty VPN that I have for football match times :)
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...
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...)
am i understanding correctly that Docker Hub is inaccessible in Spain during football matches? do sports get bandwidth priority?
Not bandwidth priority. It's just that our brilliant judges have let the football league implement IP blocks to combat piracy of football matches. These blocks affect CloudFlare IPs that host many websites and services unrelated to football, so we can't access them during matches via VPN. (And by the way, I'm not interested in football but people I know who are say that they still view pirate match broadcasts just fine).