NO_PROXY <comma-separated list of hosts/domains>
              list of host names that shouldn't go through any proxy. If set to an asterisk '*' only, it matches all hosts. Each name in this list is matched as either a domain name which contains the hostname, or  the  hostname  it‐
              self.

              This environment variable disables use of the proxy even when specified with the -x, --proxy option. That is NO_PROXY=direct.example.com curl -x http://proxy.example.com http://direct.example.com accesses the target URL
              directly, and NO_PROXY=direct.example.com curl -x http://proxy.example.com http://somewhere.example.com accesses the target URL through the proxy.

              The list of host names can also be include numerical IP addresses, and IPv6 versions should then be given without enclosing brackets.

              IPv6 numerical addresses are compared as strings, so they will only match if the representations are the same: "::1" is the same as "::0:1" but they don't match.