DNSレコードタイプの一覧

DNSレコードタイプの一覧を以下に示す。Domain Name System（DNS）のゾーンファイル（英語版）内のリソースレコード（RR）の概要である。 また、擬似RR（pseudo-RRs）を含んでいる。 Obsoleted by RFC 973: MD(3), MF (4), MAILA (254) Records to publish mailing list subscriber lists in the DNS: MB(7), MG(8), MR(9), MINFO(14), MAILB (253). The intent, as specified by RFC 883, was for MB to replace the SMTP VRFY command, MG to replace the SMTP EXPN command, and MR to replace the "551 User Not Local" SMTP error. Later, RFC 2505 recommended that both the VRFY and EXPN commands be disabled, making the use of MB and MG unlikely to ever be adopted. Declared "not to be relied upon" by RFC 1123 (with further information in RFC 1127): WKS(11) Mistakes: NB(32), NBSTAT(33) (from RFC 1002); the numbers are now assigned to NIMLOC and SRV. Obsoleted by RFC 1035: NULL(10) (RFC 883 defined "completion queries" (opcode 2 and maybe 3) which used this record, RFC 1035 later reassigned opcode 2 to be "status" and reserved opcode 3.) Defined as part of early IPv6 but downgraded to experimental by RFC 3363: A6(38), Later downgraded to historic in RFC 6563. Obsoleted by DNSSEC updates (RFC 3755): NXT(30). At the same time, the domain of applicability for KEY and SIG was also limited to not include DNSSEC use. Part of the first version of DNSSEC (RFC 2065). Not in current use by any notable application: HINFO(13), RP(17), X25(19), ISDN(20), RT(21), NSAP(22), NSAP-PTR(23), PX(26), EID(31), NIMLOC(32), ATMA(34), APL(42) Defined by the Kitchen Sink internet draft, but never made it to RFC status: SINK(40) A more limited early version of the LOC record: GPOS(27) IANA reserved, no RFC documented them [1] and support was removed from BIND in the early 90s: UINFO(100), UID(101), GID(102), UNSPEC(103) SPF(99) (from RFC 4408) was specified as part of the Sender Policy Framework protocol as an alternative to storing SPF data in TXT records, using the same format. It was later found that the majority of SPF deployments lack proper support for this record type, and support for it was discontinued in RFC 7208. RP(17) may be used for certain human-readable information regarding a different contact point for a specific host, subnet, or other domain level label separate than that used in the SOA record. “IANA DNS Parameters registry”. 2008年5月25日閲覧。 “Google's Guide to DNS Records”. 2010年12月9日閲覧。 [脚注の使い方] ^ a b c d e f g h i Paul Mockapetris (November 1987). “RFC [https://datatracker.ietf.org/doc/html/rfc1035 1035: Domain Names - Implementation and Specification]”. Network Working Group of the IETF (Internet Engineering Task Force). p. 12. 2011年1月12日閲覧。 ^ “RFC [https://datatracker.ietf.org/doc/html/rfc3596 3596: DNS Extensions to Support IP Version 6]”. The Internet Society (October 2003). 2011年1月13日閲覧。 ^ RFC 2535, §3 ^ RFC 3445, §1. "The KEY RR was defined in [RFC 2930]..." ^ RFC 2931, §2.4. "SIG(0) on the other hand, uses public key authentication, where the public keys are stored in DNS as KEY RRs and a private key is stored at the signer." ^ RFC 3445, §1. "DNSSEC will be the only allowable sub-type for the KEY RR..." ^ a b c RFC 3755, §3. "DNSKEY will be the replacement for KEY, with the mnemonic indicating that these keys are not for application use, per [RFC3445]. RRSIG (Resource Record SIGnature) will replace SIG, and NSEC (Next SECure) will replace NXT. These new types completely replace the old types, except that SIG(0) [RFC2931] and TKEY [RFC2930] will continue to use SIG and KEY." ^ RFC 4025, Abstract. "This record replaces the functionality of the sub-type #4 of the KEY Resource Record, which has been obsoleted by RFC 3445." ^ The minimum field of SOA record is redefined to be the TTL of NXDOMAIN reply in RFC 2308. ^ RFC 2930, §6. "... the keying material is sent within the key data field of a TKEY RR encrypted under the public key in an accompanying KEY RR [RFC 2535]." ^ RFC 2845, abstract ^ RFC 1123 section 2.2, 5.2.12, 6.1.3.6 ^ Kucherawy, M. "Background on the RRTYPE Issue". Resolution of the Sender Policy Framework (SPF) and Sender ID Experiments (英語). IETF. sec. A. doi:10.17487/RFC6686. RFC 6686. 2013年8月31日閲覧。 ^ Kitterman, S. (2014年4月). "The SPF DNS Record Type". Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1 (英語). IETF. sec. 3.1. doi:10.17487/RFC7208. RFC 7208. 2014年4月26日閲覧。 DNSサーバー