Koskamo
Navigation

DNS parameters (IANA registry)

Assigned Domain Name System (DNS) parameters from the IANA DNS Parameters registry: resource record (RR) TYPEs, RCODEs, CLASSes, and OpCodes, one document per assigned value with its meaning, references, and template or registration date where the registry lists them. Unassigned values and ranges are omitted; registrant contact handles inside references are replaced by a placeholder.

Browse 137 documentsUse with your agent

Documents

Showing 97–120 of 137 documents

DocumentVersion

RR type NSAP-PTR (23)

DNS resource record (RR) type NSAP-PTR (value 23) in the IANA Domain Name System (DNS) Parameters registry: for domain name pointer, NSAP style (DEPRECATED).

v1

RR type NSEC (47)

DNS resource record (RR) type NSEC (value 47) in the IANA Domain Name System (DNS) Parameters registry: NSEC.

v1

RR type NSEC3 (50)

DNS resource record (RR) type NSEC3 (value 50) in the IANA Domain Name System (DNS) Parameters registry: NSEC3.

v1

RR type NSEC3PARAM (51)

DNS resource record (RR) type NSEC3PARAM (value 51) in the IANA Domain Name System (DNS) Parameters registry: NSEC3PARAM.

v1

RR type NULL (10)

DNS resource record (RR) type NULL (value 10) in the IANA Domain Name System (DNS) Parameters registry: a null RR (EXPERIMENTAL).

v1

RR type NXNAME (128)

DNS resource record (RR) type NXNAME (value 128) in the IANA Domain Name System (DNS) Parameters registry: NXDOMAIN indicator for Compact Denial of Existence.

v1

RR type NXT (30)

DNS resource record (RR) type NXT (value 30) in the IANA Domain Name System (DNS) Parameters registry: Next Domain (OBSOLETE).

v1

RR type OPENPGPKEY (61)

DNS resource record (RR) type OPENPGPKEY (value 61) in the IANA Domain Name System (DNS) Parameters registry: OpenPGP Key.

v1

RR type OPT (41)

DNS resource record (RR) type OPT (value 41) in the IANA Domain Name System (DNS) Parameters registry: OPT.

v1

RR type PTR (12)

DNS resource record (RR) type PTR (value 12) in the IANA Domain Name System (DNS) Parameters registry: a domain name pointer.

v1

RR type PX (26)

DNS resource record (RR) type PX (value 26) in the IANA Domain Name System (DNS) Parameters registry: X.400 mail mapping information.

v1

RR type Reserved (0)

DNS resource record (RR) type Reserved (value 0) in the IANA Domain Name System (DNS) Parameters registry (no meaning listed).

v1

RR type Reserved (65535)

DNS resource record (RR) type Reserved (value 65535) in the IANA Domain Name System (DNS) Parameters registry (no meaning listed).

v1

RR type RESINFO (261)

DNS resource record (RR) type RESINFO (value 261) in the IANA Domain Name System (DNS) Parameters registry: Resolver Information as Key/Value Pairs.

v1

RR type RKEY (57)

DNS resource record (RR) type RKEY (value 57) in the IANA Domain Name System (DNS) Parameters registry: RKEY.

v1

RR type RP (17)

DNS resource record (RR) type RP (value 17) in the IANA Domain Name System (DNS) Parameters registry: for Responsible Person.

v1

RR type RRSIG (46)

DNS resource record (RR) type RRSIG (value 46) in the IANA Domain Name System (DNS) Parameters registry: RRSIG.

v1

RR type RT (21)

DNS resource record (RR) type RT (value 21) in the IANA Domain Name System (DNS) Parameters registry: for Route Through.

v1

RR type SIG (24)

DNS resource record (RR) type SIG (value 24) in the IANA Domain Name System (DNS) Parameters registry: for security signature.

v1

RR type SINK (40)

DNS resource record (RR) type SINK (value 40) in the IANA Domain Name System (DNS) Parameters registry: SINK.

v1

RR type SMIMEA (53)

DNS resource record (RR) type SMIMEA (value 53) in the IANA Domain Name System (DNS) Parameters registry: S/MIME cert association.

v1

RR type SOA (6)

DNS resource record (RR) type SOA (value 6) in the IANA Domain Name System (DNS) Parameters registry: marks the start of a zone of authority.

v1

RR type SPF (99)

DNS resource record (RR) type SPF (value 99) in the IANA Domain Name System (DNS) Parameters registry (no meaning listed).

v1

RR type SRV (33)

DNS resource record (RR) type SRV (value 33) in the IANA Domain Name System (DNS) Parameters registry: Server Selection.

v1

Source, review, and usage
Published on Koskamo by
Koskamo
Version
138
Documents
137 documents
Reviewed
2026-10-05
Last approved change
2026-10-05
Agent lookups
0 in the last 90 days
Reuse
IANA Domain Name System (DNS) Parameters registry (iana.org/assignments/dns-parameters); registry data reproduced verbatim with references
Review status
Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

Use this dataset from an agent

Agents can query it without an account. POST to /api/v1/retrieve, or connect an MCP client and call koskamo_retrieve with dataset: "dns-parameters".

Set up your agentRead documents as JSON

The JSON endpoint returns document text and source links in pages. Use limit and offset to retrieve more records; total gives the dataset size.

retrieve request
curl --fail-with-body 'https://koskamo.com/api/v1/retrieve' -H 'Content-Type: application/json' --data-raw '{"query":"dns-parameters","dataset":"dns-parameters","top_k":3}'

Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

  1. Published by Koskamo

    RR type EUI48 (108) · v1

  2. Published by Koskamo

    RR type SVCB (64) · v1

  3. Published by Koskamo

    OpCode DNS Stateful Operations (DSO) (6) · v1

  4. Published by Koskamo

    OpCode Update (5) · v1

  5. Published by Koskamo

    OpCode Notify (4) · v1

  6. Published by Koskamo

    OpCode Status (2) · v1

  7. Published by Koskamo

    OpCode IQuery (Inverse Query, OBSOLETE) (1) · v1

  8. Published by Koskamo

    OpCode Query (0) · v1

  9. Published by Koskamo

    CLASS Reserved (65535) · v1

  10. Published by Koskamo

    CLASS QCLASS * (ANY) (255) · v1