[FIG(quote)[
[FIGCAPTION[
[1] [CITE@en[RFC 6125 - Representation and Verification of Domain-Based Application Service Identity within Internet Public Key Infrastructure Using X.509 (PKIX) Certificates in the Context of Transport Layer Security (TLS)]]
([TIME[2015-03-13 22:27:53 +09:00]] 版)
<https://tools.ietf.org/html/rfc6125#section-1.8>
]FIGCAPTION]

> derived domain:  A domain name or host name that a client has derived
>       from the source domain in an automated fashion (e.g., by means of
>       a '''['''DNS-SRV''']''' lookup).

]FIG]