# is-dns-hosted-by-vercel

> is-dns-hosted-by-vercel 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 Vercel by looking up its NS records via Cloudflare DoH and matching them against known Vercel nameserver patterns.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/hosted-by/vercel?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-vercel-a8085e6f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NTzfwHsOrQqCVlN9xfwmk

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-vercel-a8085e6f
```

Example prompt: Can you check if stripe.com has its DNS hosted by Vercel — I want to know if it's using Vercel nameservers and which ones matched?

## When to prefer this

Use this endpoint when you specifically need to detect whether a domain's DNS is managed by Vercel (as opposed to general NS record lookup). Ideal for sales prospecting to find Vercel customers, infrastructure audits to map vendor dependencies, or security workflows that need to identify Vercel-hosted assets. Prefer this over generic DNS lookup endpoints when you need a pre-matched, vendor-specific yes/no answer rather than raw NS records.

## Known failure modes

- Domain does not exist or has no NS records — returns no match with empty nameserver list
- Cloudflare DoH lookup fails due to network issues — lookup error returned
- Invalid or malformed domain input — request rejected with validation error
- Domain uses Vercel-adjacent but unrecognized nameserver variants — may return false negative

## How this service works

Is the domain's DNS hosted by vercel? Looks up the NS records (Cloudflare DoH) and matches them against vercel'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 verdict on whether the domain's DNS is hosted by Vercel, the full list of NS records retrieved via Cloudflare DoH, and a subset list of which nameservers matched Vercel's known 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-vercel-a8085e6f/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)