Australia - https://www.donotcall.gov.au/
Canada - https://lnnte-dncl.gc.ca/en/Consumer/Register-your-number/#!/
United Kingdom - https://www.tpsonline.org.uk/
United States - https://www.donotcall.gov/index.html
Australia - https://www.donotcall.gov.au/
Canada - https://lnnte-dncl.gc.ca/en/Consumer/Register-your-number/#!/
United Kingdom - https://www.tpsonline.org.uk/
United States - https://www.donotcall.gov/index.html
When I did it, you could opt out electronically for 5 years, but a lifetime opt out requires you to mail a printed form. I’m guessing the lenders have something to do with that and are banking on most people not having a printer.
Edit: Or having to deal with paying for a stamp and putting something in the mail.
But yes, I love their 90s clip art.
Looks like things have changed:
https://consumer.ftc.gov/articles/national-do-not-call-registry-faqs