# DNS SVCB Lookup via OpenDNS (DoH)

> DNS SVCB Lookup via OpenDNS (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 2026-10-22).

Retrieves SVCB DNS records for a domain using OpenDNS as the resolver via DNS over HTTPS, returning records, TTL, response code, DNSSEC validation status, and answer time.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/svcb/via/opendns?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-svcb-lookup-via-opendns-doh-3c0508c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_36J0CxStCS5amNU9g5XK3

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-svcb-lookup-via-opendns-doh-3c0508c9
```

Example prompt: Look up the SVCB DNS records for example.com using OpenDNS as the resolver and tell me the records, TTL, response code, whether DNSSEC was validated, and how fast OpenDNS answered.

## When to prefer this

Use this endpoint when you specifically need to know what OpenDNS returns for SVCB records — for instance to detect OpenDNS-specific filtering, check propagation on OpenDNS's resolver network, or compare OpenDNS answers against other resolvers like Cloudflare or Google. Choose sibling endpoints for other record types (A, AAAA, TXT, CNAME) or other resolvers (DNSPod, NextDNS, CleanBrowsing).

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code with empty records
- OpenDNS resolver error — returns SERVFAIL response code
- No SVCB records configured for the domain — returns NOERROR with empty record set
- Timeout or connectivity issue reaching OpenDNS DoH endpoint
- Malformed domain name input causing query failure

## How this service works

SVCB 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 SVCB records for the queried domain as answered by OpenDNS via DNS over HTTPS, including the record data, TTL, DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), a flag indicating whether the resolver performed DNSSEC validation, 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-svcb-lookup-via-opendns-doh-3c0508c9/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)