# dns-txt-via-mullvad

> dns-txt-via-mullvad is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Resolves DNS TXT records for a domain using Mullvad's DNS-over-HTTPS resolver and returns records, TTL, response code, DNSSEC validation status, and answer time.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/txt/via/mullvad?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-txt-via-mullvad-c6506618
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KkVaZl3UWO4726HZbIcdU

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 dns-txt-via-mullvad-c6506618
```

Example prompt: Can you query the TXT records for example.com using the Mullvad DNS resolver and tell me the records, TTL, response code, whether DNSSEC was validated, and how fast the resolver responded?

## When to prefer this

Choose this endpoint when you specifically need to see how Mullvad's privacy-focused DNS-over-HTTPS resolver answers TXT record queries — particularly when comparing resolver responses across providers to detect propagation differences, filtering, or split-horizon DNS configurations. Ideal for security audits requiring a privacy-respecting resolver perspective, or when verifying SPF/DMARC/domain-verification TXT records from a non-ISP, non-Google vantage point.

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code with no records
- Resolver fails to answer — returns SERVFAIL response code
- No TXT records exist for the domain — NOERROR with empty record set
- DNSSEC validation failure — resolver may not validate and flag accordingly
- Network timeout reaching Mullvad DoH endpoint — may return error or high latency
- Malformed domain input — request may be rejected or return unexpected response

## How this service works

TXT records for a domain as answered by Mullvad DNS (DNS over HTTPS): the records, TTL, response code (NOERROR/NXDOMAIN/SERVFAIL), whether the resolver validated DNSSEC, and the resolver's answer time. Compare resolvers to spot propagation lag, filtering or split-horizon answers. $0.01 per lookup.

## Output

Returns the TXT record set for the queried domain as answered by Mullvad's DNS-over-HTTPS resolver, including: the raw TXT record strings, their TTL (time-to-live in seconds), the DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), a boolean indicating whether Mullvad validated DNSSEC for this response, and the resolver's answer latency in milliseconds.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-txt-via-mullvad-c6506618/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)