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ASN Info Lookup (RIPEstat)
x402
ASN Info Lookup (RIPEstat) is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).
Returns structured information about an autonomous system number (ASN): holder name, route announcement status, registry block, prefix counts, approximate IPv4 addresses, and a sample of announced prefixes, sourced from RIPEstat.
Price / call$0.003
Success—
StatusUnknown
How this service works
Information about an autonomous system: holder, whether it announces routes, registry block, number of IPv4 and IPv6 prefixes announced, approximate IPv4 addresses and a sample of prefixes. RIPEstat data.
Output
A JSON object containing: the ASN number, the registered holder name (titular), the registry block assignment (bloque), a boolean indicating whether routes are announced (anuncia), the data source (fuente, always RIPEstat), the count of announced IPv4 and IPv6 prefixes, the approximate number of IPv4 addresses, and a sample array of announced prefix CIDRs.
Example use cases
Identify network operator behind an IP
“I traced some suspicious traffic back to ASN 209242 — can you look it up and tell me who owns it, whether it's actively announcing routes, and how big their IP footprint is?”
Research BGP footprint of a cloud provider
“Give me an overview of Cloudflare's ASN 13335: who it's registered to, which registry block it came from, the number of IPv4 and IPv6 prefixes it announces, and a sample of those prefixes.”
Validate ASN before peering decision
“We're considering peering with AS3356 — can you pull up its RIPEstat info so I can see the holder name, whether it's actively routing, and roughly how many IPv4 addresses it covers?”
Technical details
Endpoint
POSThttps://api.vextorium.com/asn-info-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, parsed ASN metadata including prefix counts, holder identity, and route announcement status in a single call, backed by RIPEstat data. Prefer this over raw WHOIS lookups when you need machine-readable output with IPv4/IPv6 prefix statistics and sample prefixes without parsing raw registry text.
Side effects
- Invalid or non-existent ASN returns null fields or an error response
- ASN that exists in registry but announces no routes returns anuncia: false with zero prefix counts
- Network timeout from upstream RIPEstat API results in a service error
- Malformed ASN string input (e.g. non-numeric) may return a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| asn | string |
Output
Schema · Response
{
"type": "json",
"example": {
"asn": 13335,
"bloque": "Assigned by ARIN",
"fuente": "RIPEstat (RIPE NCC)",
"anuncia": true,
"titular": "CLOUDFLARENET - Cloudflare, Inc.",
"prefijos_ipv4": 2478,
"prefijos_ipv6": 3057,
"muestra_prefijos": [
"104.28.1.0/24",
"162.158.106.0/24"
],
"direcciones_ipv4_aprox": 1498368
}
}Tags
x402
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