[1] Loopback IPv4 address。 localhost に対応する IPv4 address。
127.0.0.1
に解決される公開ドメイン名[2] subdomain - Public Wildcard Domain Name To Resolve To 127.0.0.1 - Stack Overflow ( 版) <http://stackoverflow.com/questions/1562954/public-wildcard-domain-name-to-resolve-to-127-0-0-1>
[4] [MIX] Carveout for `127.0.0.1`? (Mike West 著, 版) <https://lists.w3.org/Archives/Public/public-webappsec/2016Apr/0044.html>
[5] Restrict loopback address to Secure Contexts? (John Wilander著, ) <https://lists.w3.org/Archives/Public/public-webappsec/2016Sep/0089.html>