Methodology

ASN classification

How ASN metadata and network-type labels are normalized for monthly release files.

ASN role

ASN context explains which autonomous system is associated with a prefix. It provides network ownership, operational, and routing context.

Classification inputs

ASN identifier
ASN name or description
ASN country
ASN type labels
Company or organization aliases where available
Routing and prefix footprint behavior

Network type examples

Common labels include hosting, ISP, business, education, government, mobile, bogon, and unknown.

Special ASN values

-1 represents not available or not applicable.
-2 represents bogon scope.

Why this matters

ASN classification allows analysts to understand not only where a prefix is geolocated, but also the type of network operating it.