# Dev Reference DNS Record Type Lookup

> Dev Reference DNS Record Type Lookup is a paid API for AI agents from dev-reference.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).

Looks up a DNS record type by name (e.g. MX) or number (e.g. 15) and returns its IANA meaning, RFC reference, and typical use.

## Facts

- Endpoint: GET https://dev-reference.x402tookit.com/dns-record-type?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dev-reference-dns-record-type-lookup-fcf98ce8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XB140dLoyhzFjpaRy9iaR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dev-reference-dns-record-type-lookup-fcf98ce8
```

Example prompt: What does the MX DNS record type mean — can you give me its IANA meaning, the RFC it comes from, and what it's typically used for?

## When to prefer this

Use this endpoint when you need authoritative, structured DNS record type metadata — IANA meaning, RFC reference, and typical use — by name or number. Prefer it over general web search when you need machine-readable, structured output with obsolescence and registration status flags. Ideal for developer tooling, DNS debugging agents, and documentation generators.

## Known failure modes

- Unknown or unrecognized record type name/number returns null fields or a not-found verdict
- Invalid input (non-string, missing query parameter) returns an error or empty response
- Degraded mode may return partial data with a degraded flag set to true
- Very new or experimental record types not yet in IANA registry may return incomplete results

## How this service works

DNS record type lookup by name (MX) or number (15): IANA meaning, RFC reference and typical use.

## Output

Returns the DNS record type's canonical name, numeric code, IANA-registered meaning, relevant RFC reference, typical use description, whether it is obsolete or still registered, and optionally a summary and verdict about the record type's current status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "type"
     ],
     "properties": {
      "type": {
       "type": "string",
       "description": "Record type name such as TXT or its number such as 16"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "name": {
       "type": [
        "null",
        "string"
       ]
      },
      "number": {
       "type": [
        "null",
        "number"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "meaning": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "obsolete": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "reference": {
       "type": [
        "null",
        "string"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "registered": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "typicalUse": {
       "type": [
        "null",
        "string"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dev-reference-dns-record-type-lookup-fcf98ce8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dev-reference.x402tookit.com](https://www.zero.xyz/host/dev-reference.x402tookit.com/llms.txt)