Whois results:

NetRange:       204.13.248.0 - 204.13.251.255
CIDR:           204.13.248.0/22
OriginAS:       AS33517
NetName:        DNSINC-1
NetHandle:      NET-204-13-248-0-1
Parent:         NET-204-0-0-0-0
NetType:        Direct Assignment
Comment:        Dynamic Network Services, Inc. http://www.dyndns.org
RegDate:        2005-05-10
Updated:        2012-03-02
Ref:            http://whois.arin.net/rest/net/NET-204-13-248-0-1

OrgName:        Dynamic Network Services, Inc.
OrgId:          DNS-33
Address:        150 Dow St.
City:           Manchester
StateProv:      NH
PostalCode:     03101
Country:        US
RegDate:        2004-01-06
Updated:        2011-06-21
Ref:            http://whois.arin.net/rest/org/DNS-33

OrgTechHandle: IAA29-ARIN
OrgTechName:   IP Address Administator
OrgTechPhone:  +1-603-296-1598 
OrgTechEmail:  dyn.com
OrgTechRef:    http://whois.arin.net/rest/poc/IAA29-ARIN

OrgNOCHandle: NOC1473-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-603-668-4998 
OrgNOCEmail:  dyndns.com
OrgNOCRef:    http://whois.arin.net/rest/poc/NOC1473-ARIN

OrgAbuseHandle: ABUSE514-ARIN
OrgAbuseName:   Abuse Department
OrgAbusePhone:  +1-603-668-4998 
OrgAbuseEmail:  dyndns.com
OrgAbuseRef:    http://whois.arin.net/rest/poc/ABUSE514-ARIN

RAbuseHandle: ABUSE514-ARIN
RAbuseName:   Abuse Department
RAbusePhone:  +1-603-668-4998 
RAbuseEmail:  dyndns.com
RAbuseRef:    http://whois.arin.net/rest/poc/ABUSE514-ARIN

RTechHandle: TJD14-ARIN
RTechName:   Daly, Thomas J
RTechPhone:  +1-603-668-4998 
RTechEmail:  dyn.com
RTechRef:    http://whois.arin.net/rest/poc/TJD14-ARIN

RNOCHandle: NOC1473-ARIN
RNOCName:   Network Operations Center
RNOCPhone:  +1-603-668-4998 
RNOCEmail:  dyndns.com
RNOCRef:    http://whois.arin.net/rest/poc/NOC1473-ARIN