ASN Prefixes

What It Does

Queries the RIPEstat Data API to retrieve all IP prefixes currently announced by the specified ASN in the global BGP routing table, then validates each prefix against published Route Origin Authorizations. Returns IPv4 prefixes with CIDR notation, IP count (calculated as 2^(32-prefix_length)), name, description, `first_seen` / `last_seen` timestamps from the RIPEstat timeline, and `rpki` status. IPv6 prefixes include the same fields plus `total_ips_v6` as a decimal string (totals routinely overflow JS Number.MAX_SAFE_INTEGER). Also provides aggregate counts and total IPv4 address space. RPKI checks run with parallel concurrency-capped lookups; results are cached for 1 hour.

Why It's Useful

Understanding the full IP footprint of an autonomous system is critical for security operations, threat intelligence, and network planning. Per-prefix RPKI status turns this into a hijack-and-leak detector — a prefix announced by an unauthorized AS is the canonical machine-readable signal of route hijacking (RFC 6811). Combined with `first_seen`/`last_seen` announcement timelines, the data needed for hijack alerting is in one response. Enables comprehensive blocklisting/allowlisting at the ASN level, attack surface enumeration, vendor IP space auditing, and peering capacity assessment. See RFC 6811 (BGP Prefix Origin Validation) and RFC 7908 (Route Leak Classification).

Use Cases

Parameters

Response Fields

Code Examples

curl "https://api.edgedns.dev/v1/network/asn/prefixes" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d "asn=13335"

const response = await fetch(
  'https://api.edgedns.dev/v1/network/asn/prefixes?asn=13335',
  {
    headers: {
      'Authorization': 'Bearer YOUR_API_KEY'
    }
  }
);

const data = await response.json();
console.log(data);

import requests

response = requests.get(
    'https://api.edgedns.dev/v1/network/asn/prefixes',
    headers={'Authorization': 'Bearer YOUR_API_KEY'},
    params={
    'asn': '13335'
    }
)

data = response.json()
print(data)

Related Endpoints

External References

Learn more about the standards and protocols behind this endpoint.