<p>Here's a simple CLI tool I created as an exercise that allows quick IP to ASN lookup for a list of IP addresses using <a href="http://www.team-cymru.org/IP-ASN-mapping.html" rel="nofollow">Team Cymru's IP to ASN Mapping Service</a>.</p>
<p><a href="https://github.com/hink/ip2asn" rel="nofollow">https://github.com/hink/ip2asn</a></p>
