Multiple websites resell the financial data for like $4 per check, for example https://www.ratsit.se/ (you can try with 'sven svennson') One can also just call the tax agency and ask. The person looking up the information does not need to provide their data.

Living addresses, birth date, vehicles, pets are available in plain text without login and can be Googled.

IIRC in Norway at least everyone (who lives there) can check it but your name will be recorded and visible to that person.