# DNS NS Record Change Watch via DNS.SB

> DNS NS Record Change Watch via DNS.SB is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Monitors DNS NS records for a domain via DNS.SB, detects changes compared to the previous check, and returns current values with before/after diffs.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/ns/via/dnssb?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-ns-record-change-watch-via-dns-sb-7d9dd987
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7U1yr0JphDLtM05LgoU_h

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-ns-record-change-watch-via-dns-sb-7d9dd987
```

Example prompt: Keep an eye on the NS records for example.com via DNS.SB and let me know if the nameservers have changed since the last time you checked — show me what changed and what the values were before.

## When to prefer this

Choose this endpoint when you need to detect changes in DNS NS (nameserver) records specifically via the DNS.SB resolver, and want a built-in diff against the previous result rather than doing the comparison yourself. Ideal for scheduled monitoring workflows where you need change detection with historical context (90-day retention). Use this over raw DNS lookup endpoints when the goal is alerting or auditing nameserver changes over time.

## Known failure modes

- Domain not previously checked — no baseline exists, so 'changed' will be false on first call
- DNS.SB resolver unavailable or returns SERVFAIL — check may fail or return empty records
- Invalid or non-existent domain — may return NXDOMAIN with no NS records
- Rate or payment issues with the x402 micropayment protocol — call blocked

## How this service works

Change watch for dns ns via dnssb: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

## Output

Returns the current NS records for the domain as answered by DNS.SB, a boolean indicating whether the records changed since the last call, a list of fields that changed with before/after values, and the timestamp of when the records were last seen. Previous results are retained for 90 days.

## 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-ns-record-change-watch-via-dns-sb-7d9dd987/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)