Comment by Semaphor
3 years ago
I looked it up, the regulation was in effect since about 2006, but there was a loophole: It didn’t trigger if you switched from one provider to the same provider. And I guess that still counts when you switch from a reseller. That part has been changed later.
Thanks for the info. Good to know for the next time. Although, at the time they didn't say "we don't let you keep your number because we don't have to" but blamed it on "technical reasons".