Robtex

Up: 216.57.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.57.64.0/22
Down right: 216.57.68.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.57.65.21	A	hapsco.com
216.57.66.179	A	cabanasierravista.com
216.57.66.179	A	cuisinecaters.com
216.57.66.240	PTR	host-216-57-66-240.cal.net
216.57.69.3	PTR	host-216-57-69-3.cal.net
216.57.69.19	PTR	host-216-57-69-19.cal.net
216.57.69.24	PTR	host-216-57-69-24.cal.net
216.57.69.34	PTR	host-216-57-69-34.cal.net
216.57.69.40	PTR	host-216-57-69-40.cal.net
216.57.69.41	PTR	host-216-57-69-41.cal.net
216.57.69.48	PTR	host-216-57-69-48.cal.net
216.57.69.57	PTR	host-216-57-69-57.cal.net
216.57.69.64	PTR	host-216-57-69-64.cal.net
216.57.69.65	PTR	host-216-57-69-65.cal.net
216.57.69.75	PTR	host-216-57-69-75.cal.net
216.57.69.81	PTR	host-216-57-69-81.cal.net
216.57.69.82	PTR	host-216-57-69-82.cal.net
216.57.69.90	PTR	host-216-57-69-90.cal.net
216.57.69.97	PTR	host-216-57-69-97.cal.net
216.57.69.98	PTR	host-216-57-69-98.cal.net
216.57.69.106	PTR	host-216-57-69-106.cal.net
216.57.69.128	PTR	host-216-57-69-128.cal.net
216.57.69.136	PTR	host-216-57-69-136.cal.net
216.57.69.145	PTR	host-216-57-69-145.cal.net
216.57.69.168	PTR	host-216-57-69-168.cal.net
216.57.69.178	PTR	host-216-57-69-178.cal.net
216.57.69.184	PTR	host-216-57-69-184.cal.net
216.57.69.186	PTR	host-216-57-69-186.cal.net
216.57.69.192	PTR	host-216-57-69-192.cal.net
216.57.69.195	PTR	host-216-57-69-195.cal.net
216.57.69.210	PTR	host-216-57-69-210.cal.net
216.57.69.217	PTR	host-216-57-69-217.cal.net
216.57.69.218	PTR	host-216-57-69-218.cal.net
216.57.69.234	PTR	host-216-57-69-234.cal.net
216.57.69.242	PTR	host-216-57-69-242.cal.net
216.57.69.243	PTR	host-216-57-69-243.cal.net
216.57.69.251	PTR	host-216-57-69-251.cal.net
216.57.70.19	PTR	host-216-57-70-19.cal.net
216.57.70.138	A	thedonlonfamily.info
216.57.70.139	A	machiatto.com
216.57.70.166	A	aisuvu.net
216.57.71.2	PTR	ns1-rec.cal.net
216.57.71.2	A	ns1.directcon.net
216.57.71.2	A	zeus.directcon.net
216.57.71.3	PTR	ns2.cal.net
216.57.71.10	PTR	wh01.cal.net
216.57.71.10	A	timkelly.com
216.57.71.10	A	norcaltesting.com
216.57.71.11	PTR	wh01.cal.net
216.57.71.20	A	canit-web.directcon.net
216.57.71.20	A	corp.cal.net
216.57.71.20	A	canitweb.cal.net
216.57.71.21	A	canitscan1.cal.net
216.57.71.23	A	mail.cal.net
216.57.71.24	A	webmail.directcon.net
216.57.71.24	A	hermes.cal.net
216.57.71.24	A	hermes.directcon.net
216.57.71.25	PTR	smtp.cal.net
216.57.71.40	A+PTR	ns3.cal.net
216.57.71.40	A	ns3.directcon.net
216.57.71.46	A	newmail.goldrush.com
216.57.71.46	A	mail.cal.net
216.57.71.50	PTR	host-216-57-71-50.cal.net
216.57.71.51	PTR	host-216-57-71-51.cal.net
216.57.71.54	A	mail.caldotnet.com
216.57.71.54	A	edcwisp.net
216.57.71.54	A	caldotnet.com
216.57.71.56	PTR	host-216-57-71-56.cal.net
216.57.71.57	PTR	smtpauth.cal.net
216.57.71.58	PTR	host-216-57-71-58.cal.net
216.57.71.59	PTR	host-216-57-71-59.cal.net
216.57.71.60	A	zenoss5.cal.net
216.57.71.60	A	eldoradocountyrealtors.org
216.57.71.61	A	main.cal.net
216.57.71.62	A	mailhost.cal.net
216.57.71.64	PTR	host-216-57-71-64.cal.net
216.57.71.65	PTR	host-216-57-71-65.cal.net
216.57.71.66	PTR	host-216-57-71-66.cal.net
216.57.71.67	PTR	host-216-57-71-67.cal.net
216.57.71.72	PTR	host-216-57-71-72.cal.net
216.57.71.72	A	edcwisp.com
216.57.71.73	PTR	host-216-57-71-73.cal.net
216.57.71.74	PTR	host-216-57-71-74.cal.net
216.57.71.75	PTR	host-216-57-71-75.cal.net
216.57.71.98	PTR	host-216-57-71-98.cal.net
216.57.71.98	A	placerville-downtown.org
216.57.71.100	A	darlenesvacationcabins.com
216.57.71.103	A	boberdmann.com
216.57.71.103	A	columbinecommunications.com
216.57.71.104	A	rescuechurchofchrist.org
216.57.71.110	A	mail.mineraldrop.com
216.57.71.110	A	dietdropsonline.com
216.57.71.110	A	mineraldrop.com
216.57.71.161	PTR	host-216-57-71-161.cal.net
216.57.71.161	A	cal.net
216.57.71.209	PTR	wh01.cal.net
216.57.71.209	A	mail.resourceaccords.com
216.57.71.209	A	suttercreekprivatelenders.com
216.57.71.216	A	mail.waskengr.com
216.57.71.216	A	waskengr.com
216.57.71.217	PTR	host-216-57-71-217.cal.net
216.57.71.217	A	iwantmyccw.com
216.57.71.217	A	mail.iwantmyccw.com
216.57.71.218	PTR	host-216-57-71-218.cal.net
216.57.71.238	A	cal.net
216.57.71.238	A	www.cal.net
216.57.71.244	A	sys.cal.net
216.57.71.254	A	wispprequal.com