Robtex

Up: 66.102.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 66.102.160.0/20
Down right: 66.102.176.0/20

IP	Type	Hostname
66.102.162.4	A	atlradius2.mycingular.net
66.102.162.5	PTR	atlradius2a.mycingular.net
66.102.163.197	A	atlradius3a.mycingular.net
66.102.163.198	A	atlradius3b.mycingular.net
66.102.163.199	A	atlradius3c.mycingular.net
66.102.163.230	A	atldigest.mycingular.net
66.102.163.231	A+PTR	atliserv1.mycingular.net
66.102.163.231	A	ns3.sbcemail.com
66.102.163.232	PTR	atliserv2.mycingular.net
66.102.163.232	A	ns4.sbcemail.com
66.102.164.222	A+PTR	atlmx.mycingular.net
66.102.164.222	A	mx.mycingular.net
66.102.164.231	A+PTR	atlmta1.mycingular.net
66.102.164.232	A+PTR	atlmta2.mycingular.net
66.102.164.233	A+PTR	atlmta3.mycingular.net
66.102.164.234	A+PTR	atlmta4.mycingular.net
66.102.165.6	A+PTR	atlmtaow01.cingularme.com
66.102.165.7	A+PTR	atlmtaow02.cingularme.com
66.102.165.8	A+PTR	atlmtaow03.cingularme.com
66.102.165.100	A+PTR	atlmail.cingularme.net
66.102.165.101	PTR	www.cingularme.net
66.102.165.102	A	atlsd.cingularme.com
66.102.165.103	A+PTR	atlmms.cingularme.com
66.102.165.114	A	mms.mycingular.net
66.102.165.131	PTR	imcomvgtw03.ser.cingular.net
66.102.165.167	PTR	yahoo.cwmim.com
66.102.166.111	PTR	oimmmg01.ser.cingular.net
66.102.167.222	PTR	wcmx.mycingular.net
66.102.167.228	A	wirelessdata-167-228.mycingular.net
66.102.167.231	PTR	wcmta1.mycingular.net
66.102.167.244	A	wirelessdata-167-244.mycingular.net
66.102.167.245	A	wirelessdata-167-245.mycingular.net
66.102.167.246	A	wirelessdata-167-246.mycingular.net
66.102.171.164	A+PTR	wclbl03.mycingular.com
66.102.171.165	A+PTR	wclbl04.mycingular.com
66.102.171.166	A	wcagvr.mycingular.com
66.102.171.167	A	wcagwl01.mycingular.com
66.102.171.231	A	wcradius3a.mycingular.net
66.102.171.232	A	wcradius3b.mycingular.net
66.102.171.233	A	wcradius3c.mycingular.net
66.102.172.222	A+PTR	wcmx.mycingular.net
66.102.172.222	A	mx.mycingular.net
66.102.172.231	A+PTR	wcmta1.mycingular.net
66.102.172.232	A	wcmta2.mycingular.net
66.102.172.233	A	wcmta3.mycingular.net
66.102.172.234	A	wcmta4.mycingular.net
66.102.173.2	A+PTR	wcmail.cingularme.net
66.102.173.4	A	wcsd.cingularme.com
66.102.184.5	A+PTR	atlmdns1.mycingular.net
66.102.184.70	A	atlrdns1.mycingular.net
66.102.185.5	A	wcmdns1.mycingular.net
66.102.185.70	A+PTR	wcrdns1.mycingular.net
66.102.186.10	A	alpmagr1fe01-dmz.mycingular.net
66.102.186.11	A	alpmagr1fe02-dmz.mycingular.net
66.102.186.12	A	alpmagr1fe03-dmz.mycingular.net
66.102.186.13	A	alpmagr1fe04-dmz.mycingular.net
66.102.186.72	A	alpmagproxy.mycingular.net
66.102.186.135	A+PTR	selfcare.mycingular.net