# DNS A Record Lookup via CleanBrowsing (DoH)

> DNS A Record Lookup via CleanBrowsing (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 2026-10-01).

Resolves DNS A records for a domain through CleanBrowsing's security-filtering DNS over HTTPS resolver, returning records, TTL, response code, DNSSEC validation status, and answer time.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/a/via/cleanbrowsing?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-record-lookup-via-cleanbrowsing-doh-2c9af095
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z4cNkmL1K9DNidWGl-CY0

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-record-lookup-via-cleanbrowsing-doh-2c9af095
```

Example prompt: Can you look up the A records for example.com using CleanBrowsing's DNS resolver and tell me what IP it returns, the TTL, whether DNSSEC was validated, and how fast it answered?

## When to prefer this

Choose this endpoint when you specifically need to see how CleanBrowsing's security-filtering resolver answers A record queries — for example, to detect whether it is blocking or sinkhol-ing a domain, to compare its answer against other resolvers for propagation or split-horizon analysis, or to verify DNSSEC validation behavior at a security-focused resolver. Use sibling endpoints for other record types (CNAME, AAAA, TXT) or other resolvers (NextDNS, DNSPod).

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code
- CleanBrowsing has blocked the domain due to security filtering — may return NXDOMAIN or a sinkhole IP
- Resolver is temporarily unavailable — returns SERVFAIL
- No A records exist for domain (IPv6-only or CNAME-only) — empty record set with NOERROR
- Malformed domain input — request fails or returns error

## How this service works

A records for a domain as answered by CleanBrowsing (security filter) (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 A record(s) for the queried domain as seen by CleanBrowsing's security-filtering DoH resolver, including: the resolved IP address(es), TTL value, DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), a boolean indicating whether DNSSEC was validated, 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-a-record-lookup-via-cleanbrowsing-doh-2c9af095/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)