# DNS TXT Record Lookup for ns1 Subdomain via Cloudflare DoH

> DNS TXT Record Lookup for ns1 Subdomain via Cloudflare 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).

Looks up the TXT DNS record for the ns1.<domain> subdomain using Cloudflare DNS over HTTPS and reports existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/ns1/txt?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-txt-record-lookup-for-ns1-subdomain-via-cloudflare-doh-821c68fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ECioV6_NTHBZahRsacdGx

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-txt-record-lookup-for-ns1-subdomain-via-cloudflare-doh-821c68fb
```

Example prompt: Can you check if ns1.example.com has any TXT records and let me know what they say and their TTL?

## When to prefer this

Use this endpoint when you need a fast, targeted check for TXT records specifically on the ns1 subdomain of a domain, without running a full subdomain enumeration. Prefer this over general DNS TXT record endpoints when the ns1 host is the specific target, and over full enumeration tools when stealth or minimal query volume matters. Ideal for infrastructure checks, domain audits, and quick existence validation via Cloudflare's reliable DoH resolver.

## Known failure modes

- Domain not found: NXDOMAIN response with no records
- No TXT records exist for ns1 subdomain: empty records array with NOERROR
- Invalid domain format: request rejected or malformed query
- Cloudflare DoH upstream timeout: delayed or failed response
- Rate limiting or payment failure: 402 or 429 error if USDC payment not settled

## How this service works

TXT record of ns1.<domain>: looks up the ns1 host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like ns1 without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the ns1.<domain> subdomain exists, its TXT record values, TTL, and the DNS response code from Cloudflare's DoH resolver.

## 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-txt-record-lookup-for-ns1-subdomain-via-cloudflare-doh-821c68fb/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)