The file is a 7-Zip archive , which uses high-ratio compression (LZMA/LZMA2) and supports strong AES-256 encryption .

These archives are frequently shared within technical communities for the following purposes:

The specific IPv4 or IPv6 ranges associated with that ASN. 2. Primary Use Cases

The name of the entity controlling the IP range.

Inside such an archive, you will typically find JSON, CSV, or MMDB files containing: ASN ID: The numeric identifier (e.g., AS15169 for Google).

While "asns.7z" is a generic naming convention, it is most commonly used in networking and cybersecurity to distribute databases of ASNs . An ASN is a unique identifier used in Border Gateway Protocol (BGP) to identify independent networks on the internet.