# DNS NS Records via Mullvad DoH

> DNS NS Records via Mullvad DoH 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).

Retrieves NS records for a domain using Mullvad's DNS over HTTPS resolver, returning records, TTL, response code, DNSSEC validation status, and answer time.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/ns/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-ns-records-via-mullvad-doh-0e4fd6c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XIsPV6bRB-Js7aq4MkzOP

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-ns-records-via-mullvad-doh-0e4fd6c9
```

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

## When to prefer this

Choose this endpoint when you specifically want to see how Mullvad's DNS resolver (known for privacy and optional filtering) answers NS record queries, especially to compare against other resolvers for propagation lag, split-horizon differences, or filtering behavior. Prefer it over generic DNS lookup tools when Mullvad's resolver perspective, DNSSEC validation status, and answer latency are all relevant to your analysis.

## Known failure modes

- NXDOMAIN returned if domain does not exist
- SERVFAIL returned if Mullvad resolver encounters an upstream error or DNSSEC validation failure
- Empty record set if no NS records are configured for the domain
- Network timeout if Mullvad DoH endpoint is unreachable
- Invalid domain input may result in an error or unexpected response

## How this service works

NS 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 NS records for the queried domain as seen by Mullvad's DoH resolver, including the record values, TTL, DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), a boolean indicating whether the resolver validated DNSSEC, 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-ns-records-via-mullvad-doh-0e4fd6c9/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)