Robtex

Up: 168.102.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 168.102.128.0/18
Down right: 168.102.192.0/18

IP	Type	Hostname
168.102.130.4	A	host.wert.com
168.102.130.4	A	mail.wert.com
168.102.130.10	PTR	ns3.fwcs.k12.in.us
168.102.130.10	A	ns3.towlesnewtech.org
168.102.130.10	A	ns1.studyconnection.org
168.102.130.11	PTR	ns4.fwcs.k12.in.us
168.102.132.4	A+PTR	smtp.nacs.k12.in.us
168.102.132.240	A	spam.nacs.k12.in.us
168.102.132.241	A	mail.nacs.k12.in.us
168.102.133.4	A	maila.eacs.k12.in.us
168.102.133.53	A	imap.eacs.k12.in.us
168.102.134.10	A	mail.sacs.k12.in.us
168.102.134.62	A+PTR	webmail1.sacs.k12.in.us
168.102.134.250	A	ns1.sacs.k12.in.us
168.102.134.251	A	ns2.sacs.k12.in.us
168.102.135.9	A+PTR	bdfs1.bishopdwenger.com
168.102.135.33	A	mail.bishopdwenger.com
168.102.135.35	A	rocket.bishopdwenger.com
168.102.135.61	A	fwsbpowerschool.org