ASNmap :: Knowledge Base (KB)

ASNmap

Go CLI and Library for quickly mapping organization network ranges using ASN information.

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

go install github.com/projectdiscovery/asnmap/cmd/asnmap@latest

Or download newest pre-compiled binary from Github.com.

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

CONFIGURATIONS:
   -config string           path to the asnmap configuration file
   -r, -resolvers string[]  list of resolvers to use

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

Examples

Example input for asnmap:

asnmap -a AS45596 -silent
asnmap -i 100.19.12.21 -silent
asnmap -d hackerone.com -silent
asnmap -o GOOGLE -silent

ASN Look-up by name

$ echo GOOGLE | asnmap -silent  
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
34.104.4.0/23
34.104.24.0/22
34.104.28.0/24
34.104.30.0/23

Look-up by ASN

asnmap -a AS45596 -silent
103.252.142.0/23
203.176.112.0/23

Look-up to JSON

echo hackerone.com | asnmap -json -silent | jq
{
  "timestamp": "2022-10-13 09:14:19.657435 +0200 CEST",
  "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": "2022-10-13 09:14:19.914636 +0200 CEST",
  "input": "hackerone.com",
  "as_number": "AS13335",
  "as_name": "CLOUDFLARENET",
  "as_country": "US",
  "as_range": [
    "2606:4700::/47"
  ]
}

Look-up to CSV

echo hackerone.com | asnmap -csv -silent 
timestamp|input|as_number|as_name|as_country|as_range
2022-10-13 09:15:59.231592 +0200 CEST|hackerone.com|AS13335|CLOUDFLARENET|US|104.16.0.0/14,104.20.0.0/16,104.21.0.0/17
2022-10-13 09:15:59.239025 +0200 CEST|hackerone.com|AS13335|CLOUDFLARENET|US|2606:4700::/47

URL List

Github.com - asnmap