ASNmap
CLI tool for mapping organization network ranges using ASN data
...This capability makes it particularly useful for security researchers, penetration testers, and reconnaissance workflows that require identifying network infrastructure owned by a target organization. asnmap retrieves ASN-related data and returns structured results that can be easily integrated into automated pipelines. Output can be generated in multiple formats including plain text, JSON, and CSV, enabling flexible data processing and analysis. asnmap also supports reading input from standard input and piping its results directly into other command line tools for chained workflows.