# asnmap > A Go CLI tool for mapping organization network ranges using ASN information. > Note: An API key is required from ProjectDiscovery Cloud Platform for the tool to work. > More information: . - Lookup CIDR ranges for an ASN: `asnmap {{[-a|-asn]}} {{AS5650}} -silent` - Lookup CIDR ranges for an IP address: `asnmap {{[-i|-ip]}} {{100.19.12.21}} -silent` - Lookup CIDR ranges for a domain: `asnmap {{[-d|-domain]}} {{example.com}} -silent` - Lookup CIDR ranges for an organization: `asnmap -org {{GOOGLE}} -silent` - Lookup CIDR ranges from a file of targets: `asnmap {{[-f|-file]}} {{targets.txt}} -silent` - Output results in JSON format: `asnmap {{[-d|-domain]}} {{facebook.com}} {{[-j|-json]}} -silent` - Output results in CSV format: `asnmap {{[-a|-asn]}} {{AS394161}} {{[-c|-csv]}} -silent` - Update asnmap to the latest version: `asnmap {{[-up|-update]}}`