TYPE,Value,Meaning,Reference,Template,Registration Date
Reserved,0,,[RFC6895],,2021-03-08
A,1,a host address,[RFC1035],,
NS,2,an authoritative name server,[RFC1035],,
MD,3,a mail destination (OBSOLETE - use MX),[RFC1035],,
MF,4,a mail forwarder (OBSOLETE - use MX),[RFC1035],,
CNAME,5,the canonical name for an alias,[RFC1035],,
SOA,6,marks the start of a zone of authority,[RFC1035],,
MB,7,a mailbox domain name (EXPERIMENTAL),[RFC1035],,
MG,8,a mail group member (EXPERIMENTAL),[RFC1035],,
MR,9,a mail rename domain name (EXPERIMENTAL),[RFC1035],,
NULL,10,a null RR (EXPERIMENTAL),[RFC1035],,
WKS,11,a well known service description,[RFC1035],,
PTR,12,a domain name pointer,[RFC1035],,
HINFO,13,host information,[RFC1035],,
MINFO,14,mailbox or mail list information,[RFC1035],,
MX,15,mail exchange,[RFC1035],,
TXT,16,text strings,[RFC1035],,
RP,17,for Responsible Person,[RFC1183],,
AFSDB,18,for AFS Data Base location,[RFC1183][RFC5864],,
X25,19,for X.25 PSDN address,[RFC1183],,
ISDN,20,for ISDN address,[RFC1183],,
RT,21,for Route Through,[RFC1183],,
NSAP,22,"for NSAP address, NSAP style A record",[RFC1706],,
NSAP-PTR,23,"for domain name pointer, NSAP style",[RFC1706],,
SIG,24,for security signature,[RFC2536][RFC2931][RFC3110][RFC4034],,
KEY,25,for security key,[RFC2536][RFC2539][RFC3110][RFC4034],,
PX,26,X.400 mail mapping information,[RFC2163],,
GPOS,27,Geographical Position,[RFC1712],,
AAAA,28,IP6 Address,[RFC3596],,
LOC,29,Location Information,[RFC1876],,
NXT,30,Next Domain (OBSOLETE),[RFC2535][RFC3755],,
EID,31,Endpoint Identifier,[Michael_Patton][http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt],,1995-06
NIMLOC,32,Nimrod Locator,[1][Michael_Patton][http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt],,1995-06
SRV,33,Server Selection,[1][RFC2782],,
ATMA,34,ATM Address,"[
        ATM Forum Technical Committee, ""ATM Name System, V2.0"", Doc ID: AF-DANS-0152.000, July 2000. Available from and held in escrow by IANA.]",,
NAPTR,35,Naming Authority Pointer,[RFC3403],,
KX,36,Key Exchanger,[RFC2230],,
CERT,37,CERT,[RFC4398],,
A6,38,A6 (OBSOLETE - use AAAA),[RFC2874][RFC3226][RFC6563],,
DNAME,39,DNAME,[RFC6672],,
SINK,40,SINK,[Donald_E_Eastlake][draft-eastlake-kitchen-sink],,1997-11
OPT,41,OPT,[RFC3225][RFC6891],,
APL,42,APL,[RFC3123],,
DS,43,Delegation Signer,[RFC4034],,
SSHFP,44,SSH Key Fingerprint,[RFC4255],,
IPSECKEY,45,IPSECKEY,[RFC4025],,
RRSIG,46,RRSIG,[RFC4034],,
NSEC,47,NSEC,[RFC4034][RFC9077],,
DNSKEY,48,DNSKEY,[RFC4034],,
DHCID,49,DHCID,[RFC4701],,
NSEC3,50,NSEC3,[RFC5155][RFC9077],,
NSEC3PARAM,51,NSEC3PARAM,[RFC5155],,
TLSA,52,TLSA,[RFC6698],,
SMIMEA,53,S/MIME cert association,[RFC8162],SMIMEA/smimea-completed-template,2015-12-01
Unassigned,54,,,,
HIP,55,Host Identity Protocol,[RFC8005],,
NINFO,56,NINFO,[Jim_Reid],NINFO/ninfo-completed-template,2008-01-21
RKEY,57,RKEY,[Jim_Reid],RKEY/rkey-completed-template,2008-01-21
TALINK,58,Trust Anchor LINK,[Wouter_Wijngaards],TALINK/talink-completed-template,2010-02-17
CDS,59,Child DS,[RFC7344],CDS/cds-completed-template,2011-06-06
CDNSKEY,60,DNSKEY(s) the Child wants reflected in DS,[RFC7344],,2014-06-16
OPENPGPKEY,61,OpenPGP Key,[RFC7929],OPENPGPKEY/openpgpkey-completed-template,2014-08-12
CSYNC,62,Child-To-Parent Synchronization,[RFC7477],,2015-01-27
ZONEMD,63,Message Digest Over Zone Data,[RFC8976],ZONEMD/zonemd-completed-template,2018-12-12
SVCB,64,Service Binding,[draft-ietf-dnsop-svcb-https-00],SVCB/svcb-completed-template,2020-06-30
HTTPS,65,HTTPS Binding,[draft-ietf-dnsop-svcb-https-00],HTTPS/https-completed-template,2020-06-30
Unassigned,66-98,,,,
SPF,99,,[RFC7208],,
UINFO,100,,[IANA-Reserved],,
UID,101,,[IANA-Reserved],,
GID,102,,[IANA-Reserved],,
UNSPEC,103,,[IANA-Reserved],,
NID,104,,[RFC6742],ILNP/nid-completed-template,
L32,105,,[RFC6742],ILNP/l32-completed-template,
L64,106,,[RFC6742],ILNP/l64-completed-template,
LP,107,,[RFC6742],ILNP/lp-completed-template,
EUI48,108,an EUI-48 address,[RFC7043],EUI48/eui48-completed-template,2013-03-27
EUI64,109,an EUI-64 address,[RFC7043],EUI64/eui64-completed-template,2013-03-27
Unassigned,110-248,,,,
TKEY,249,Transaction Key,[RFC2930],,
TSIG,250,Transaction Signature,[RFC8945],,
IXFR,251,incremental transfer,[RFC1995],,
AXFR,252,transfer of an entire zone,[RFC1035][RFC5936],,
MAILB,253,"mailbox-related RRs (MB, MG or MR)",[RFC1035],,
MAILA,254,mail agent RRs (OBSOLETE - see MX),[RFC1035],,
*,255,A request for some or all records the server has available,[RFC1035][RFC6895][RFC8482],,
URI,256,URI,[RFC7553],URI/uri-completed-template,2011-02-22
CAA,257,Certification Authority Restriction,[RFC8659],CAA/caa-completed-template,2011-04-07
AVC,258,Application Visibility and Control,[Wolfgang_Riedel],AVC/avc-completed-template,2016-02-26
DOA,259,Digital Object Architecture,[draft-durand-doa-over-dns],DOA/doa-completed-template,2017-08-30
AMTRELAY,260,Automatic Multicast Tunneling Relay,[RFC8777],AMTRELAY/amtrelay-completed-template,2019-02-06
Unassigned,261-32767,,,,
TA,32768,DNSSEC Trust Authorities,"[Sam_Weiler][http://cameo.library.cmu.edu/][
        Deploying DNSSEC Without a Signed Root.  Technical Report 1999-19,
Information Networking Institute, Carnegie Mellon University, April 2004.]",,2005-12-13
DLV,32769,DNSSEC Lookaside Validation (OBSOLETE),[RFC8749][RFC4431],,
Unassigned,32770-65279,,,,
Private use,65280-65534,,,,
Reserved,65535,,,,