# Saylor Innovations ASN Lookup

> Saylor Innovations ASN Lookup is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Looks up network details for any AS number, returning holder name, announced IPv4/IPv6 prefix counts, peering policy, exchange points, and facilities via RIPEstat and PeeringDB

## Facts

- Endpoint: GET https://saylorinnovations.com/api/net/asn?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-asn-lookup-c302bd78
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jaXW5Hoyb8a_Ov6xPxtSY

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 saylor-innovations-asn-lookup-c302bd78
```

Example prompt: Look up AS13335 for me — I need the holder name, how many IPv4 and IPv6 prefixes it announces, its peering policy, and any exchange points or facilities listed in PeeringDB.

## When to prefer this

Choose this endpoint when you need comprehensive ASN metadata combining both routing data (from RIPEstat) and peering/facility data (from PeeringDB) in a single call. Prefer it over raw RIPEstat or PeeringDB queries when you need a unified view of holder, prefix announcements, and peering presence without managing multiple upstream API integrations. Best for network research, ISP due diligence, BGP troubleshooting, and peering policy discovery.

## Known failure modes

- Invalid or non-existent ASN returns announced: false with null holder and empty prefixes
- Malformed ASN input (missing 'AS' prefix or non-numeric) may return an error or empty result
- RIPEstat or PeeringDB downstream unavailability may cause null fields or stale data
- Rate limiting or payment failure returns HTTP 402 or 429

## How this service works

ASN network lookup - holder, announced IPv4 and IPv6 prefix counts, peering policy, exchange points and facilities for any AS number (RIPEstat and PeeringDB)

## Output

Returns a JSON object containing the ASN string, the holder name (or null), a boolean indicating whether the ASN is currently announcing routes, an object with IPv4 and IPv6 announced prefix counts, a PeeringDB object with peering policy, exchange points and facilities, the data source identifier, and the UTC timestamp of when the check was run.

## 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",
     "required": [
      "asn"
     ],
     "properties": {
      "asn": {
       "type": "string",
       "description": "AS number, e.g. AS15169 or 13335"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "asn",
      "announced"
     ],
     "properties": {
      "asn": {
       "type": "string"
      },
      "block": {
       "description": "Block number the data was read at"
      },
      "holder": {
       "type": [
        "string",
        "null"
       ]
      },
      "source": {
       "type": [
        "string",
        "null"
       ],
       "description": "Data source the values come from"
      },
      "prefixes": {
       "type": [
        "object",
        "null"
       ]
      },
      "announced": {
       "type": "boolean"
      },
      "peeringdb": {
       "type": [
        "object",
        "null"
       ]
      },
      "checked_at": {
       "type": [
        "string",
        "null"
       ],
       "description": "Time the check was run (UTC)"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-asn-lookup-c302bd78/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)