# dns-a-via-mullvad

> dns-a-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 2026-10-01).

Resolves DNS A records for a domain using Mullvad's DNS over HTTPS resolver, returning IP addresses, TTL, response code, DNSSEC validation status, and answer latency.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/a/via/mullvad?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-a-via-mullvad-a0da6c5c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3V38a-CW0oMfSMReeDHvK

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-a-via-mullvad-a0da6c5c
```

Example prompt: What A records does Mullvad DNS return for github.com — including the TTL, response code, whether DNSSEC was validated, and how fast the resolver answered?

## When to prefer this

Choose this endpoint when you specifically need to query DNS A records through Mullvad's privacy-focused DNS resolver — particularly useful for detecting resolver-specific filtering, comparing propagation lag across resolvers, auditing split-horizon DNS behavior, or checking DNSSEC validation status from a privacy resolver's perspective. Prefer this over generic DNS lookups when Mullvad's resolver identity matters to the analysis.

## Known failure modes

- Domain not found returns NXDOMAIN response code
- Resolver failure returns SERVFAIL response code
- Missing or invalid domain parameter causes request error
- Network timeout to Mullvad DNS upstream results in error
- Domain with no A records (e.g. MX-only domain) returns empty record set with NOERROR

## How this service works

A 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 DNS A records (IP addresses) for the queried domain as answered by Mullvad's DNS over HTTPS resolver, along with the TTL, response code (NOERROR, NXDOMAIN, or SERVFAIL), whether DNSSEC was validated, and the resolver's answer time 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-a-via-mullvad-a0da6c5c/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)