DNS.ResourceRecord.Type (DNS v0.0.0)

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DNS RRTypes

DNS Resource Record Type

Decimal     Hex     Registration Procedures     Note
0   0x0000  RRTYPE zero is used as a special indicator for the SIG RR [RFC2931], [RFC4034] and in other circumstances and must never be allocated for ordinary use.
1-127   0x0000-0x007F   Expert Review (see mailing list information in [RFC6895]) or Standards Action   data TYPEs
128-255 0x0080-0x00FF   Expert Review (see mailing list information in [RFC6895]) or Standards Action   Q TYPEs, Meta TYPEs
256-61439   0x0100-0xEFFF   Expert Review (see mailing list information in [RFC6895]) or Standards Action   data RRTYPEs
61440-65279 0xF000-0xFEFF   Reserved for future use (IETF Review required to define use)
65280-65534 0xFF00-0xFFFE   Private Use
65535   0xFFFF  Reserved (Standards Action)

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 (DEPRECATED)  [RFC1706][status-change-int-tlds-to-historic]
NSAP-PTR    23  for domain name pointer, NSAP style (DEPRECATED)    [RFC1706][status-change-int-tlds-to-historic]
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  General-purpose service binding [RFC9460]   SVCB/svcb-completed-template    2020-06-30
HTTPS   65  SVCB-compatible type for use with HTTP  [RFC9460]   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
RESINFO 261 Resolver Information as Key/Value Pairs [draft-ietf-add-resolver-info-06]   RESINFO/resinfo-completed-template  2023-11-02
Unassigned  262-32767
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

Reference

Summary

Functions

a6()

A6 (OBSOLETE - use AAAA)

a()

a host address

aaaa()

IP6 Address

afsdb()

for AFS Data Base location

amtrelay()

Automatic Multicast Tunneling Relay

any()

A request for some or all records the server has available

apl()

APL

atma()

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.)

avc()

Application Visibility and Control

axfr()

transfer of an entire zone

caa()

Certification Authority Restriction

cdnskey()

DNSKEY(s) the Child wants reflected in DS

cds()

Child DS

cert()

CERT

cname()

the canonical name for an alias

csync()

Child-To-Parent Synchronization

dhcid()

DHCID

dlv()

DNSSEC Lookaside Validation (OBSOLETE)

dname()

DNAME

dnskey()

DNSKEY

doa()

Digital Object Architecture

ds()

Delegation Signer

eid()

Endpoint Identifier

get_name(code)
gpos()

Geographical Position

hinfo()

host information

hip()

Host Identity Protocol

https()

SVCB-compatible type for use with HTTP

ipseckey()

IPSECKEY

isdn()

for ISDN address

ixfr()

incremental transfer

key()

for security key

kx()

Key Exchanger

loc()

Location Information

maila()

mail agent RRs (OBSOLETE - see MX)

mailb()

mailbox-related RRs (MB, MG or MR)

mb()

a mailbox domain name (EXPERIMENTAL)

md()

a mail destination (OBSOLETE - use MX)

mf()

a mail forwarder (OBSOLETE - use MX)

mg()

a mail group member (EXPERIMENTAL)

minfo()

mailbox or mail list information

mr()

a mail rename domain name (EXPERIMENTAL)

mx()

mail exchange

naptr()

Naming Authority Pointer

nimloc()

Nimrod Locator

ninfo()

NINFO

ns()

an authoritative name server

nsap()

for NSAP address, NSAP style A record (DEPRECATED)

nsap_ptr()

for domain name pointer, NSAP style (DEPRECATED)

nsec3()

NSEC3

nsec3param()

NSEC3PARAM

nsec()

NSEC

null()

a null RR (EXPERIMENTAL)

nxt()

Next Domain (OBSOLETE)

openpgpkey()

OpenPGP Key

opt()

OPT

ptr()

a domain name pointer

px()

X.400 mail mapping information

resinfo()

Resolver Information as Key/Value Pairs

rkey()

RKEY

rp()

for Responsible Person

rrsig()

RRSIG

rt()

for Route Through

sig()

for security signature

sink()

SINK (Donald_E_Eastlake)(draft-eastlake-kitchen-sink)

smimea()

S/MIME cert association

soa()

marks the start of a zone of authority

spf()

SPF

srv()

Server Selection

sshfp()

SSH Key Fingerprint

svcb()

General-purpose service binding

ta()

DNSSEC Trust Authorities

talink()

Trust Anchor LINK

tkey()

Transaction Key

tlsa()

TLSA

to_print(code)
tsig()

Transaction Signature

txt()

text strings

uri()

URI

wks()

a well known service description

x25()

for X.25 PSDN address

zonemd()

Message Digest Over Zone Data

Functions

a6()

A6 (OBSOLETE - use AAAA)

a()

a host address

aaaa()

IP6 Address

afsdb()

for AFS Data Base location

amtrelay()

Automatic Multicast Tunneling Relay

any()

A request for some or all records the server has available

apl()

APL

atma()

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.)

avc()

Application Visibility and Control

axfr()

transfer of an entire zone

caa()

Certification Authority Restriction

cdnskey()

DNSKEY(s) the Child wants reflected in DS

cds()

Child DS

cert()

CERT

cname()

the canonical name for an alias

csync()

Child-To-Parent Synchronization

dhcid()

DHCID

dlv()

DNSSEC Lookaside Validation (OBSOLETE)

dname()

DNAME

dnskey()

DNSKEY

doa()

Digital Object Architecture

ds()

Delegation Signer

eid()

Endpoint Identifier

get_name(code)

@spec get_name(integer()) ::
  atom()
  | {:private_use, integer()}
  | {:reserved, 0 | 65535}
  | {:unassigned, integer()}

gpos()

Geographical Position

hinfo()

host information

hip()

Host Identity Protocol

https()

SVCB-compatible type for use with HTTP

ipseckey()

IPSECKEY

isdn()

for ISDN address

ixfr()

incremental transfer

key()

for security key

kx()

Key Exchanger

loc()

Location Information

maila()

mail agent RRs (OBSOLETE - see MX)

mailb()

mailbox-related RRs (MB, MG or MR)

mb()

a mailbox domain name (EXPERIMENTAL)

md()

a mail destination (OBSOLETE - use MX)

mf()

a mail forwarder (OBSOLETE - use MX)

mg()

a mail group member (EXPERIMENTAL)

minfo()

mailbox or mail list information

mr()

a mail rename domain name (EXPERIMENTAL)

mx()

mail exchange

naptr()

Naming Authority Pointer

nimloc()

Nimrod Locator

ninfo()

NINFO

ns()

an authoritative name server

nsap()

for NSAP address, NSAP style A record (DEPRECATED)

nsap_ptr()

for domain name pointer, NSAP style (DEPRECATED)

nsec3()

NSEC3

nsec3param()

NSEC3PARAM

nsec()

NSEC

null()

a null RR (EXPERIMENTAL)

nxt()

Next Domain (OBSOLETE)

openpgpkey()

OpenPGP Key

opt()

OPT

ptr()

a domain name pointer

px()

X.400 mail mapping information

resinfo()

Resolver Information as Key/Value Pairs

rkey()

RKEY

rp()

for Responsible Person

rrsig()

RRSIG

rt()

for Route Through

sig()

for security signature

sink()

SINK (Donald_E_Eastlake)(draft-eastlake-kitchen-sink)

smimea()

S/MIME cert association

soa()

marks the start of a zone of authority

spf()

SPF

srv()

Server Selection

sshfp()

SSH Key Fingerprint

svcb()

General-purpose service binding

ta()

DNSSEC Trust Authorities

talink()

Trust Anchor LINK

tkey()

Transaction Key

tlsa()

TLSA

to_print(code)

@spec to_print(integer()) :: binary()

tsig()

Transaction Signature

txt()

text strings

uri()

URI

wks()

a well known service description

x25()

for X.25 PSDN address

zonemd()

Message Digest Over Zone Data