# is-dns-hosted-by-vultr

> is-dns-hosted-by-vultr is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Checks whether a domain's DNS is hosted by Vultr by looking up its NS records via Cloudflare DoH and matching them against Vultr's nameserver patterns, returning a yes/no result with matched nameservers.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/hosted-by/vultr?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-dns-hosted-by-vultr-fb20ce95
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OOqeocjrdrjiPKQPaHWdw

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-vultr-fb20ce95
```

Example prompt: Can you check if example.com has its DNS hosted by Vultr — I need to know if their nameservers match Vultr's patterns and which ones matched?

## When to prefer this

Choose this endpoint when you need to definitively determine whether a specific domain's DNS infrastructure is managed by Vultr, particularly for sales prospecting (identifying Vultr customers), security audits (mapping Vultr-hosted assets), or pre-migration vendor assessment. Prefer this over generic NS lookup endpoints when you want structured Vultr-specific pattern matching and a clear yes/no answer rather than raw DNS data.

## Known failure modes

- Domain does not exist or has no NS records — returns empty result or error
- Domain uses non-Vultr nameservers — returns no match with the NS records listed
- Cloudflare DoH is temporarily unavailable — lookup fails with a network error
- Malformed or invalid domain name input — request rejected or returns error
- Timeout if Cloudflare DoH response is slow

## How this service works

Is the domain's DNS hosted by vultr? Looks up the NS records (Cloudflare DoH) and matches them against vultr's nameserver patterns, returning yes/no, the nameservers and which ones matched. Vendor detection for sales, migration and security work. $0.01 per lookup.

## Output

Returns a yes/no indicator of whether the domain's DNS is hosted by Vultr, the full list of NS records resolved via Cloudflare DoH, and specifically which nameservers matched Vultr's known patterns.

## 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-vultr-fb20ce95/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)