Ask whois.arin.net ...
OrgName: Road Runner HoldCo LLC
OrgID: RCMS
Address: 13241 Woodland Park Road
City: Herndon
StateProv: VA
PostalCode: 20171
Country: US

ReferralServer: rwhois://ipmt.rr.com:4321

NetRange: 74.218.0.0 - 74.219.255.255
CIDR: 74.218.0.0/15
NetName: RCMS
NetHandle: NET-74-218-0-0-1
Parent: NET-74-0-0-0-0
NetType: Direct Allocation
NameServer: NS1.BIZ.RR.COM
NameServer: NS2.BIZ.RR.COM
NameServer: DNS4.RR.COM
Comment:
RegDate: 2006-12-05
Updated: 2007-07-24

OrgAbuseHandle: ABUSE10-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-703-345-3416
OrgAbuseEmail:

OrgTechHandle: IPTEC-ARIN
OrgTechName: IP Tech
OrgTechPhone: +1-703-345-3416
OrgTechEmail:

# ARIN WHOIS database, last updated 2007-09-30 19:10
# Enter ? for additional hints on searching ARIN's WHOIS database.

Cache Time:2007-10-01 00:26:53