> ## Content Index > Fetch the complete content index at: https://darkwebinformer.com/llms.txt > Use this file to discover other available public pages before exploring further. # ASNmap: Go CLI and Library for quickly mapping organization network ranges using ASN information - URL: https://darkwebinformer.com/asnmap-go-cli-and-library-for-quickly-mapping-organization-network-ranges-using-asn-information/ - Published: 2025-08-01T19:24:30.000Z - Updated: 2025-09-04T22:20:46.000Z - Author: Dark Web Informer - Tags: Tools --- **GitHub:** --- # Features [](https://github.com/projectdiscovery/asnmap#features) ![](https://storage.ghost.io/c/6b/16/6b16ac9c-cd67-432f-b0f3-bbec941084ff/content/images/2025/08/9823756978236598723769851-2.png) - **ASN to CIDR** Lookup - **ORG to CIDR** Lookup - **DNS to CIDR** Lookup - **IP to CIDR** Lookup - **ASN/DNS/IP/ORG** input - **JSON/CSV/TEXT** output - STD **IN/OUT** support ## Installation [](https://github.com/projectdiscovery/asnmap#installation) asnmap requires **Go 1.21** to install successfully. To install, just run the below command or download pre-compiled binary from [release page](https://github.com/projectdiscovery/asnmap/releases). go install github.com/projectdiscovery/asnmap/cmd/asnmap@latest ## Usage [](https://github.com/projectdiscovery/asnmap#usage)asnmap -h This will display help for the tool. Here are all the flag it supports. Usage: ./asnmap \[flags\] Flags: INPUT: \-a, -asn string\[\] target asn to lookup, example: -a AS5650 \-i, -ip string\[\] target ip to lookup, example: -i 100.19.12.21, -i 2a10:ad40:: \-d, -domain string\[\] target domain to lookup, example: -d google.com, -d facebook.com \-org string\[\] target organization to lookup, example: -org GOOGLE \-f, -file string\[\] targets to lookup from file CONFIGURATIONS: \-config string path to the asnmap configuration file \-r, -resolvers string\[\] list of resolvers to use UPDATE: \-up, -update update asnmap to latest version \-duc, -disable-update-check disable automatic asnmap update check OUTPUT: \-o, -output string file to write output to \-j, -json display json format output \-c, -csv display csv format output \-v6 display ipv6 cidr ranges in cli output \-v, -verbose display verbose output \-silent display silent output \-version show version of the project ## Configuring ASNMap CLI [](https://github.com/projectdiscovery/asnmap#configuring-asnmap-cli) ASNMap CLI is built on top of the ASNMap API that requires API Token from [ProjectDiscovery Cloud Platform](https://cloud.projectdiscovery.io/?ref=api%5Fkey) that can be configured using environment variable or using interactive `-auth` option as shown below. ### Using environment variable [](https://github.com/projectdiscovery/asnmap#using-environment-variable)export PDCP\_API\_KEY=\*\*\*\*\*\*\*\*\*\*\*\*\* ### Using auth option [](https://github.com/projectdiscovery/asnmap#using-auth-option)asnmap -auth \_\_\_ \_\_\_\_\_ \_\_ / \_ | / \_\_/ |/ /\_ \_ \_\_\_ \_\_\_\_ / \_\_ |\_\\ \\/ / ' \\/ \_ / \_ \\ /\_/ |\_/\_\_\_/\_/|\_/\_/\_/\_/\\\_,\_/ .\_\_/ /\_/ projectdiscovery.io \[INF\] Get your free api key by signing up at https://cloud.projectdiscovery.io \[\*\] Enter PDCP API Key (exit to abort): \*\*\*\*\*\*\*\*\*\*\*\*\* \[INF\] Successfully logged in as (@user) ## Running asnmap [](https://github.com/projectdiscovery/asnmap#running-asnmap) **asnmap** support multiple inputs including **ASN**, **IP**, **DNS** and **ORG** name to query ASN/CIDR information. | Input | ASN | DNS | IP | ORG | | ------- | ------- | ----------- | ------------- | ------ | | Example | AS14421 | example.com | 93.184.216.34 | GOOGLE | Input can be provided either using specific options or STDIN which accepts all the supported formats. Single, multiple (comma-separated) and file input is supported for all the options. echo GOOGLE | ./asnmap -silent Example input for asnmap: asnmap -a AS45596 -silent asnmap -i 100.19.12.21 -silent asnmap -d hackerone.com -silent asnmap -org GOOGLE -silent ### Default Run [](https://github.com/projectdiscovery/asnmap#default-run) **asnmap** by default returns the CIDR range for given input. echo GOOGLE | ./asnmap \_\_\_ \_\_\_\_\_ \_\_ / \_ | / \_\_/ |/ /\_ \_ \_\_\_ \_\_\_\_ / \_\_ |\_\\ \\/ / ' \\/ \_ / \_ \\ /\_/ |\_/\_\_\_/\_/|\_/\_/\_/\_/\\\_,\_/ .\_\_/ /\_/ v0.0.1 projectdiscovery.io Use with caution. You are responsible for your actions Developers assume no liability and are not responsible for any misuse or damage. 8.8.4.0/24 8.8.8.0/24 8.35.200.0/21 34.3.3.0/24 34.4.4.0/24 34.96.0.0/20 34.96.32.0/19 34.96.64.0/18 34.98.64.0/18 34.98.136.0/21 34.98.144.0/21 ### JSON Output [](https://github.com/projectdiscovery/asnmap#json-output) **asnmap** by default displays CIDR range, and all the information is always available in JSON format, for automation and post processing using `-json` output is most convenient option to use. echo hackerone.com | ./asnmap -json -silent | jq{ "timestamp": "2022-09-19 12:14:33.267339314 +0530 IST", "input": "hackerone.com", "as\_number": "AS13335", "as\_name": "CLOUDFLARENET", "as\_country": "US", "as\_range": \[ "104.16.0.0/14", "104.20.0.0/16", "104.21.0.0/17" \] } { "timestamp": "2022-09-19 12:14:33.457401266 +0530 IST", "input": "hackerone.com", "as\_number": "AS13335", "as\_name": "CLOUDFLARENET", "as\_country": "US", "as\_range": \[ "2606:4700:8390::/44" \] } ### CSV Output [](https://github.com/projectdiscovery/asnmap#csv-output) **asnmap** also support csv format output which has all the information just like JSON output echo hackerone.com | ./asnmap -csv -silenttimestamp|input|as\_number|as\_name|as\_country|as\_range 2022-09-19 12:15:04.906664007 +0530 IST|hackerone.com|AS13335|CLOUDFLARENET|US|104.16.0.0/14,104.20.0.0/16,104.21.0.0/17 2022-09-19 12:15:05.201328136 +0530 IST|hackerone.com|AS13335|CLOUDFLARENET|US|2606:4700:9760::/44 ### Using with other PD projects [](https://github.com/projectdiscovery/asnmap#using-with-other-pd-projects) Output of asnmap can be directly piped into other projects in workflow accepting stdin as input, for example: - `echo AS54115 | asnmap | tlsx` - `echo AS54115 | asnmap | dnsx -ptr` - `echo AS54115 | asnmap | naabu -p 443` - `echo AS54115 | asnmap | naabu -p 443 | httpx` - `echo AS54115 | asnmap | naabu -p 443 | httpx | nuclei -id tech-detect` ## Use asnmap as a library [](https://github.com/projectdiscovery/asnmap#use-asnmap-as-a-library) Examples of using asnmap from Go code are provided in the [examples](https://github.com/projectdiscovery/asnmap/blob/main/examples) folder. ## Acknowledgements [](https://github.com/projectdiscovery/asnmap#acknowledgements) - [Frank Denis](https://github.com/jedisct1/) for maintaining free IPtoASN database.