ASN Lookup

Autonomous system information by IP or domain.

Pro tool with increased limits.

ASN Lookup — Autonomous System

Get autonomous system (AS) information by IP or domain: ASN number, owner organization, IP ranges and geography. Used for network infrastructure analysis.

ASN number and name
Owner organization
IP prefixes
Geolocation

How to Use

  1. Enter an ASN number (e.g., AS13335) or IP address for lookup
  2. The system will identify the autonomous system, provider and IP ranges
  3. Review network info: organization name and associated prefixes

Use Cases

  • Identify the network operator behind suspicious IP traffic.
  • Analyze competitor infrastructure and CDN ownership.

Limitations

  • Data depends on public RIR/BGP sources and may lag updates.
  • Some ranges can be aggregated under large transit operators.

Example Input / Output

Example Input
8.8.8.8
Example Output
ASN: AS15169, Organization: Google LLC, Registry: ARIN, Prefixes: 235.

FAQ

ASN is a unique number assigned to a network provider. An autonomous system is a group of IP networks under unified routing management.

Knowing the ASN helps determine the hosting provider, identify neighboring sites and evaluate network reputation. Useful for competitor analysis.
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