Yes, Quad9. Apparently it is blocked due to being part of DOMAINTOOLS hotlist https://www.quad9.net/result?url=contrachrome.com https://www.quad9.net/result?ur

Yes, Quad9. Apparently it is blocked due to being part of DOMAINTOOLS hotlist https://www.quad9.net/result?url=contrachrome.com https://www.quad9.net/result?url=contrachrome.com I just used the form to report a false positive. I believe that you can use the "no malware blocking" settings in order to avoid occasional false positives like this one: https://www.quad9.net/service/service-addresses-and-features https://www.quad9.net/service/service-addresses-and-features