Firefox#
Technical implementations#
- Cloudflare DNS: https://mozilla.cloudflare-dns.com/dns-query
-
NextDNS: https://trr.dns.nextdns.io/
-
IPv4 test URL: http://detectportal.firefox.com/success.txt?ipv4
- IPv6 test URL: http://detectportal.firefox.com/success.txt?ipv6