How ASN Type Fields Help Classify IP Addresses as Hosting, Business, or ISP

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Every public IP address belongs to an Autonomous System Number (ASN), which carries a type field — such as HOSTING, ISP, BUSINESS, EDUCATION, or GOVERNMENT — that identifies the kind of network it operates on. Developers can use a single API call to an ASN endpoint to retrieve this classification, helping sort traffic into buckets like datacenter, consumer, or organization. HOSTING indicates cloud or datacenter infrastructure, ISP points to consumer access networks, while BUSINESS, EDUCATION, and GOVERNMENT all represent organizations managing their own address space. However, the method has known limitations — for instance, a business running on rented cloud infrastructure will be tagged as HOSTING rather than BUSINESS, potentially misclassifying legitimate organizational traffic. Despite such edge cases, ASN type classification remains a reliable tool for fraud detection, abuse prevention, and network traffic analysis.

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