[2] [CITE@en[RFC 1386 - The US Domain]], [TIME[2021-02-01T01:57:29.000Z]], [TIME[2021-03-13T09:59:49.275Z]] <https://tools.ietf.org/html/rfc1386>

[1] [CITE@en[RFC 1480 - The US Domain]]
([TIME[2015-05-03 16:36:03 +09:00]] 版)
<http://tools.ietf.org/html/rfc1480>