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ASN_NOT_FOUND

No autonomous system with that number is in the index

GET /api/v1/ip/asn/{asn} found nothing to report: the ASN database assigns no prefix to that number. Nothing is charged.

http status
404
credits
Nothing is billed for a failed request.

What it means

The ASN endpoint reads an index built from the DB-IP ASN database: every autonomous system that database assigns at least one prefix to. A number that announces nothing the database knows — a reserved or private number, a system that has never held address space, a typo — is not in it.

It is a fact about the database, not about the registry: the RIR statistics may well have allocated the number. Looking up an address is unaffected; an address answers its own asn and org from the same database.

What to do

Check the number, or look up an address inside the network you mean and read the asn the answer carries.

Example response 

{
    "success": false,
    "error": {
        "code": "ASN_NOT_FOUND",
        "message": "No autonomous system numbered 999999 is in the index.",
        "request_id": "req_01m1kgdm4xngzmbmff68g94w0c"
    }
}

Every error carries the request_id also sent in the X-Request-Id header; quote it when writing to support.

Related

markdown version: /docs/errors/ASN_NOT_FOUND.md