# SYNTHORA RDAP ASN (Autnum) Lookup

> SYNTHORA RDAP ASN (Autnum) Lookup is a paid API for AI agents from rdap-asn-autnum.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns RDAP registration data for an Autonomous System Number (ASN), including the holding organization, RIR, registration dates, and contact entities.

## Facts

- Endpoint: POST https://rdap-asn-autnum.hergertsynthora.com/service
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-rdap-asn-autnum-lookup-eb35fc4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OFY9pzugzssrNE8u2e-7b

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 synthora-rdap-asn-autnum-lookup-eb35fc4b -d '<json body>'
```

Example prompt: Who operates AS15169? I need the RDAP registration details — the holding organization, RIR, registration date, and current status for that autonomous system number.

## When to prefer this

Use this endpoint when you need authoritative RDAP registration data for an ASN — especially for network attribution, BGP incident investigation, or abuse desk cross-referencing. Prefer this over WHOIS-based tools when you need structured, machine-readable RDAP JSON output with registration event history. It is ideal for A2A agents performing automated routing intelligence or threat attribution workflows.

## Known failure modes

- Invalid or non-existent ASN returns an error or empty result
- ASN not yet delegated by any RIR may return no data
- Malformed ASN string (e.g. missing 'AS' prefix or non-numeric) may cause lookup failure
- rdap.org upstream outage results in a failed or timeout response
- Rate limiting on the upstream RDAP service may cause intermittent failures

## How this service works

Returns RDAP autonomous-system-number registration data: holding organization, RIR, registration events and contact entities, via rdap.org. A2A use: network-attribution and BGP-intelligence agents identify who operates an AS and cross-reference abuse desks for routing incidents. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

## Output

A JSON object with the ASN string, organization name, active status array, country code, start and end autnum range, last changed date, registration date, and a provenance block including the source rdap.org URL used to fetch the record.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "asn": {
   "type": "string",
   "description": "asn"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "rdap-asn-autnum",
  "result": {
   "asn": "AS15169",
   "name": "GOOGLE",
   "status": [
    "active"
   ],
   "country": "",
   "end_autnum": 15169,
   "start_autnum": 15169,
   "last_changed_date": "2012-02-24T09:44:34-05:00",
   "registration_date": "2000-03-30T00:00:00-05:00"
  },
  "provenance": {
   "url": "https://rdap.org/autnum/15169",
   "source": "RDAP ASN (autnum) Lookup"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-rdap-asn-autnum-lookup-eb35fc4b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rdap-asn-autnum.hergertsynthora.com](https://www.zero.xyz/host/rdap-asn-autnum.hergertsynthora.com/llms.txt)