# is-dns-hosted-by-ultradns-bulk

> is-dns-hosted-by-ultradns-bulk is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-18).

Checks up to 20 domains in one call to determine whether each is DNS-hosted by UltraDNS, returning results in input order with per-item error fields and a failure count.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/bulk/dns/hosted-by/ultradns?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-dns-hosted-by-ultradns-bulk-a7a5fb7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KhjEEw10J7fiZS7gO6YJj

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 is-dns-hosted-by-ultradns-bulk-a7a5fb7b
```

Example prompt: Can you check this list of domains — acme.com, globex.io, initech.net, and 8 others I'll paste — and tell me which ones are DNS-hosted by UltraDNS? Run them all at once and show me which ones pass, which fail, and if any had errors.

## When to prefer this

Choose this endpoint when you have 2–20 domains to check simultaneously for UltraDNS hosting, avoiding the overhead of multiple sequential single-domain calls. Ideal for portfolio audits, migration planning, or threat-intelligence enrichment workflows where a list of domains is already available. Use the single-domain endpoint instead when you only need to check one domain at a time.

## Known failure modes

- Batch exceeds 20 domains — request rejected or truncated
- Individual domain lookup fails — captured in per-item error field and counted in failure total
- Invalid domain format in input — per-item error returned
- Network or upstream DNS resolution failure for one or more items — reflected in per-item errors
- Empty input list — likely returns empty results or validation error

## How this service works

Bulk is dns hosted by ultradns: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

## Output

An ordered array of per-domain results matching the input order, each containing the UltraDNS hosting verdict (same as the single-domain endpoint), a per-item error field if the lookup failed, and an overall failure count for the batch.

## 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/is-dns-hosted-by-ultradns-bulk-a7a5fb7b/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)