how do I find out who is sending messages from an IP address

OrgName: Fuse Internet Access OrgID: FIAI Address: 209 W. Seventh St. Address: MS 121-550 City: Cincinnati StateProv: OH PostalCode: 45202 Country: US ReferralServer: rwhois://rwhois.fuse.net:4321/ NetRange: 66.42.128.0 - 66.42.255.255 CIDR: 66.42.128.0/17 NetName: FUSE-NET-BLK-5 NetHandle: NET-66-42-128-0-1 Parent: NET-66-0-0-0-0 NetType: Direct Allocation NameServer: NS1.FUSE.NET NameServer: NS2.FUSE.NET Comment: *** For Abuse Issues Call 513.565.9707 or Email abuse@fuse.net Please see rwhois.fuse.net:4321 for IP assignments. *** RegDate: 2003-05-28 Updated: 2004-02-02 RTechHandle: FIA-ORG-ARIN RTechName: Fuse Internet Access Operations Center RTechPhone: +1-800-387-3638 RTechEmail: hostmaster@fuse.net OrgAbuseHandle: FAT-ARIN OrgAbuseName: Fuse Internet Access Abuse Team OrgAbusePhone: +1-513-397-6598 OrgAbuseEmail: abuse@fuse.net OrgNOCHandle: FIA-ORG-ARIN OrgNOCName: Fuse Internet Access Operations Center OrgNOCPhone: +1-800-387-3638 OrgNOCEmail: hostmaster@fuse.net OrgTechHandle: FIA-ORG-ARIN OrgTechName: Fuse Internet Access Operations Center OrgTechPhone: +1-800-387-3638 OrgTechEmail: hostmaster@fuse.net ---------------------------------- anything else i can help you with.. you can contact the webmaster and can complain abt spam from that ip to get rid of problem..

That's not easy to tracking.. but you can whois the ip and contact the phone shown on information and ask who use the ip address.