asnlkup

asnlkup

bulk lookup of AS info for IP addresses using IP2Location's ASN database

Install

Option 1: Binary

Download the latest release from https://github.com/jakewarren/asnlkup/releases/latest

Option 2: From source

go get github.com/jakewarren/asnlkup

Prerequisites

This program relies upon the IP2Location IP-ASN database https://lite.ip2location.com/database/ip-asn. Download the IPV4 CSV file from this page.

I recommend placing the database file in /home/username/.cache/asnlkup/.

Example

❯ echo "8.8.8.8" | asnlkup 
IP      |ASN   |ISP
8.8.8.8 |15169 |Google Inc.

Usage

asnlkup reads newline separated IP addresses from a file or STDIN.

❯ asnlkup -h
Usage: asnlkup [<flags>] [FILE]

Optional flags:

  -c, --csv=false: output in CSV format
  -d, --db="/home/jake/.cache/asnlkup/IP2LOCATION-LITE-ASN.CSV": db file name
  -h, --help=false: display help
  -j, --json=false: output in JSON format
  -o, --output="": output file name

Changes

All notable changes to this project will be documented in the changelog.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

License

MIT © 2018 Jake Warren