DNS Record Types

Name: DNS Record Types
Creator: staticdata.dev
License: https://opensource.org/licenses/MIT

Every assigned DNS Resource Record type registered with IANA, numbered from 1 (A) through 32769 (DLV). Each entry carries the type mnemonic, its numeric wire-format value, a human-readable description drawn directly from the IANA registry, and the authoritative RFC or document reference. Obsolete and experimental types are included for completeness.

v1.0.0 MIT 99 records Updated 2026-10-05 stable Source: IANA DNS Parameters (Resource Record (RR) TYPEs)

Quick fetch

Stable URL. CORS-enabled. No auth.

bash

curl https://staticdata.dev/v1/dns-record-types.json

Or use as a typed import: import { dnsRecordTypes } from "https://staticdata.dev/v1/dns-record-types.ts"

Formats

JSON 12.2 KB

/v1/dns-record-types.json

Open

min: 9.3 KB · /v1/dns-record-types.min.json
CSV 4.7 KB

/v1/dns-record-types.csv

Open
TypeScript 12.4 KB

/v1/dns-record-types.ts

export const dnsRecordTypes

type DnsRecordType = (typeof dnsRecordTypes)[number]

Open

Schema

Each record in the dataset has the following shape.

Schema
Field	Type	Description	Example
type	string	RR type mnemonic (e.g. A, AAAA, MX)	A
value	number	Numeric wire-format type code	1
description	string \| null	Human-readable meaning from IANA registry	a host address
reference	string \| null	Defining RFC or document reference	[RFC1035]

Preview

First 10 records.

Data preview
type	value	description	reference
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]

Showing 10 of 99. View full data: JSON · CSV

Fetch examples

Drop-in snippets in five languages.

curl

curl -sSL https://staticdata.dev/v1/dns-record-types.json | jq '.[0]'

JavaScript

import type { DnsRecordType } from "https://staticdata.dev/v1/dns-record-types.ts";

const res = await fetch("https://staticdata.dev/v1/dns-record-types.min.json");
if (!res.ok) throw new Error(`Fetch failed: ${res.status}`);
const dnsRecordTypes: DnsRecordType[] = await res.json();
console.log(dnsRecordTypes[0]);

Python

import urllib.request, json

with urllib.request.urlopen("https://staticdata.dev/v1/dns-record-types.min.json") as r:
    dnsRecordTypes = json.load(r)

print(dnsRecordTypes[0])

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

func main() {
	resp, err := http.Get("https://staticdata.dev/v1/dns-record-types.min.json")
	if err != nil { panic(err) }
	defer resp.Body.Close()

	var data []map[string]any
	if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
		panic(err)
	}
	fmt.Println(data[0])
}

Rust

use serde_json::Value;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let body = ureq::get("https://staticdata.dev/v1/dns-record-types.min.json").call()?.into_string()?;
    let data: Vec<Value> = serde_json::from_str(&body)?;
    println!("{:?}", data.first());
    Ok(())
}

Sources and methodology

The dataset contains all 99 assigned DNS Resource Record (RR) TYPE entries from the IANA DNS Parameters registry as of October 2026 (including UNECE and ISO, types 69 and 70, registered in August 2026). Unassigned ranges (e.g., 54, 71–98, 129–248) and the Reserved/Private-use entries at the extremes of the 16-bit space are excluded. The data was parsed directly from the official IANA CSV export, which is the normative source for DNS RR type assignments.

Descriptions and references are reproduced verbatim from the IANA registry. A small number of types (SPF at 99, and the IANA-Reserved types UINFO/UID/GID/UNSPEC at 100–103, and the ILNP types NID/L32/L64/LP at 104–107) have no description in the registry and carry null in the description field. Two entries (ATMA at 34 and TA at 32768) reference informal specifications rather than RFCs; their references have been condensed to the originating document or author identifier.

Several types are marked obsolete or experimental in their descriptions (MD, MF, MB, MG, MR, NULL, NXT, A6, DLV, and MAILA); others such as SIG and KEY are restricted to limited uses by later RFCs. They are retained because resolvers and zone files in the wild may still carry these types, and developers parsing DNS wire format need to handle all assigned values.

Versioning

URLs under /v1/ are stable: field names and types will not change in a way that breaks consumers. Values can be corrected or records added when the upstream source changes; schema-incompatible updates ship under a new version path. See the dns-record-types changelog for this dataset's history.

Related datasets

ip-protocol-numbers