Norway has the same law. I get no spam calls like this from Norway.

What I do get is spam calls from abroad. Often with a spoofed Norwegian number. Why can't operators block this? I know call centers and various things need to "spoof" a number they own, and when I myself call from abroad my Norwegian number will come from outside Norway.

But why can't they attest the numbers somehow? Owner of +47 XXXXXXX is currently not abroad. So why allow someone from the other side of the world to call me pretending to come from that number? Why does the Norwegian operators allow that?