# dns-a-via-opendns

> dns-a-via-opendns 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 OpenDNS over HTTPS, returning records, TTL, response code, DNSSEC validation status, and answer time.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/a/via/opendns?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-opendns-f43b234b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GZ8zYmvXA-PEyK5E4zprz

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-opendns-f43b234b
```

Example prompt: What A records does OpenDNS return for example.com, and does it validate DNSSEC — also tell me the TTL and how fast OpenDNS answered?

## When to prefer this

Choose this endpoint when you specifically want to see how OpenDNS resolves a domain's A records — particularly for comparing resolver behavior, detecting DNS filtering or sinkholing by OpenDNS, diagnosing propagation lag relative to other resolvers, or auditing DNSSEC validation. Prefer this over generic DNS lookup tools when OpenDNS-specific answers (response code, DNSSEC, answer time) are needed for multi-resolver comparison workflows.

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code
- OpenDNS resolver error — returns SERVFAIL response code
- Invalid domain name format in input — may return an error or empty result
- OpenDNS filtering active — may return a sinkhole IP instead of the real answer, appearing as NOERROR with unexpected IP
- Network timeout reaching OpenDNS DoH endpoint — service may return a timeout error

## How this service works

A records for a domain as answered by OpenDNS (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 records (IPv4 addresses) for the queried domain as answered by OpenDNS via DNS over HTTPS, along with the TTL for each record, the DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), whether DNSSEC was validated by the resolver, and the time OpenDNS took to answer the query.

## 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-opendns-f43b234b/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)