# is-dns-hosted-by-cloudflare

> is-dns-hosted-by-cloudflare is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Checks whether a domain's DNS is hosted by Cloudflare by looking up its NS records and matching them against known Cloudflare nameserver patterns.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/hosted-by/cloudflare?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-dns-hosted-by-cloudflare-f13d0403
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TcV613JMjIdcRq91YjlYv

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-cloudflare-f13d0403
```

Example prompt: Can you check if example.com has its DNS hosted by Cloudflare — I want to know the nameservers and whether any of them match Cloudflare's patterns?

## When to prefer this

Choose this endpoint when you need a fast, single-domain check specifically for Cloudflare DNS hosting with pattern-matched NS record analysis. Ideal for sales intelligence, security audits, and migration planning workflows where Cloudflare vendor detection is the specific goal. Prefer over generic DNS lookup tools when you need the Cloudflare yes/no answer and matched nameserver details in one call.

## Known failure modes

- Domain does not exist or has no NS records — returns no match with empty nameserver list
- Network or DoH resolver error — lookup may fail or time out
- Domain uses private or non-standard nameservers that partially resemble Cloudflare patterns — may produce false negatives
- Invalid or malformed domain name input — returns error
- Cloudflare's nameserver patterns change over time — detection may become stale

## How this service works

Is the domain's DNS hosted by cloudflare? Looks up the NS records (Cloudflare DoH) and matches them against cloudflare'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 Cloudflare, the full list of NS records retrieved via Cloudflare DoH, and which specific nameservers matched known Cloudflare nameserver 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-cloudflare-f13d0403/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)