ip2asn - IP address to BGP AS
Back to my collection tools! I wrote a script some times ago to tell the BGP AS of an IP address glad to team cymru:
python ip2asn.py 90.46.42.314
AS Numbers:
BGP: 90.46.0.0/17 | Country: FR
Origin AS: 3215 AS3215 France Telecom - Orange
Peer AS: 5511
You can download it here or on the right panel of this website.