Features

Extensive ASN Listings

Access a wide range of ASNs from around the world to study the global internet backbone and interconnection patterns.

Detailed Organization Info

Retrieve operational and contact details for AS holders, supporting verification, coordination, and network planning efforts.

IP Range Associations

View which IP blocks are associated with specific ASNs, helping define ownership, network scope, and routing boundaries.

API Access

Connect ASN data with your tools via API for seamless integration, automation, and network management capabilities.

What is an ASN WHOIS Database?

An ASN (Autonomous System Number) WHOIS database is a publicly accessible resource that provides detailed information about Autonomous Systems (AS). An Autonomous System is a collection of IP networks operated by one or more network operators that present a common, clearly defined routing policy to the internet. The ASN WHOIS database includes data such as the AS number, the organization to which it is allocated, contact information, and associated IP address ranges. This information is vital for understanding internet routing structures, managing network interconnections, and conducting research on internet topology.

Common Use Cases

Network Mapping Analyze ASN interconnections and relationships to understand global internet topology, enabling enhanced network visibility, strategic infrastructure planning, and optimized data traffic flow across interconnected autonomous systems.
Routing Optimization Examine routing paths, ASN relationships, and policies to fine-tune traffic flow, reduce latency, improve data transfer efficiency, and maintain robust, high-performance connectivity across distributed network infrastructures.
Peering Agreements Identify potential ASN partners for peering relationships to expand reach, reduce transit costs, improve routing efficiency, and support more effective negotiation strategies with internet service providers and content networks.
Security Analysis Monitor ASN routing behavior for anomalies or unexpected path changes to detect threats like BGP hijacking, route leaks, or spoofing, strengthening early detection and response capabilities in network security.
Market Analysis Evaluate the regional distribution of ASNs to gauge ISP market presence, identify emerging infrastructure trends, and inform strategic decisions regarding service expansion, investment opportunities, and competitive positioning.
Academic Research Leverage ASN-level data to study the evolution of internet infrastructure, explore network behaviors, and support research in areas like protocol adoption, topology analysis, and global connectivity modeling.
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