This from Arin.net's whois on the address you specified. From it, the proper place to contact is
abuse@twtelecom.net
Make sure you forward a copy with complete headers attached.
- OrgName: Time Warner Telecom
OrgID: TWTC
Address: 10475 Park Meadows Drive
City: Littleton
StateProv: CO
PostalCode: 80124
Country: US
NetRange: 168.215.0.0 - 168.215.255.255
CIDR: 168.215.0.0/16
NetName: TWTELECOM-COM
NetHandle: NET-168-215-0-0-1
Parent: NET-168-0-0-0-0
NetType: Direct Allocation
NameServer: NS1.MILW.TWTELECOM.NET
NameServer: NS1.IPLT.TWTELECOM.NET
NameServer: NS1.ORNG.TWTELECOM.NET
Comment:
RegDate: 2000-11-28
Updated: 2001-09-26
TechHandle: ZT87-ARIN
TechName: Time Warner Telecom
TechPhone: +1-800-898-6473
TechEmail: ipmanager@twtelecom.net
OrgAbuseHandle: TWTAD-ARIN
OrgAbuseName: Time Warner Telecom Abuse Desk
OrgAbusePhone: +1-800-898-6473
OrgAbuseEmail: abuse@twtelecom.net
OrgNOCHandle: TDN1-ARIN
OrgNOCName: TWTC Data NOC
OrgNOCPhone: +1-800-898-6473
OrgNOCEmail: support@twtelecom.net
OrgTechHandle: NST12-ARIN
OrgTechName: NOC SWIP Team
OrgTechPhone: +1-800-898-6473
OrgTechEmail: swip@twtelecom.com
# ARIN WHOIS database, last updated 2003-08-23 19:15
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