Robtex

Up: 216.57.70.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.57.71.0/25
Down right: 216.57.71.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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	A+PTR	ns2.cal.net
216.57.71.3	A	hera.cal.net
216.57.71.3	A	ns2.directcon.net
216.57.71.7	A	athena.cal.net
216.57.71.7	A	athena.directcon.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
216.57.71.12	PTR	venus1.cal.net
216.57.71.12	A	mail.californiawinetalk.com
216.57.71.12	A	mail.sierrafoothillswine.com
216.57.71.13	PTR	apollo.directcon.net
216.57.71.13	A	apollo.cal.net
216.57.71.13	A	rmbinfo.com
216.57.71.14	A+PTR	web01.cal.net
216.57.71.14	A	shekka.com
216.57.71.15	A	zeus2.directcon.net
216.57.71.15	A	zeus2.cal.net
216.57.71.20	A+PTR	canitweb.cal.net
216.57.71.20	A	canit-web.directcon.net
216.57.71.20	A	corp.cal.net
216.57.71.21	A+PTR	canitscan1.cal.net
216.57.71.21	A	canit-scan1.directcon.net
216.57.71.22	A+PTR	canitscan2.cal.net
216.57.71.22	A	canit-scan2.directcon.net
216.57.71.23	A+PTR	mail.cal.net
216.57.71.23	A	smtpauth.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	A+PTR	smtp.cal.net
216.57.71.25	A	smtp.directcon.net
216.57.71.40	A+PTR	ns3.cal.net
216.57.71.40	A	ns3.directcon.net
216.57.71.46	PTR	host-216-57-71-46.cal.net
216.57.71.46	A	mail.cal.net
216.57.71.46	A	newmail.goldrush.com
216.57.71.50	PTR	host-216-57-71-50.cal.net
216.57.71.51	PTR	host-216-57-71-51.cal.net
216.57.71.52	PTR	host-216-57-71-52.cal.net
216.57.71.53	PTR	host-216-57-71-53.cal.net
216.57.71.54	PTR	smtpauth.cal.net
216.57.71.54	A	mail.caldotnet.com
216.57.71.54	A	edcwisp.net
216.57.71.55	PTR	host-216-57-71-55.cal.net
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+PTR	zenoss5.cal.net
216.57.71.60	A	eldoradocountyrealtors.org
216.57.71.61	A	main.cal.net
216.57.71.62	A+PTR	mailhost.cal.net
216.57.71.63	PTR	host-216-57-71-63.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
216.57.71.68	PTR	host-216-57-71-68.cal.net
216.57.71.69	PTR	host-216-57-71-69.cal.net
216.57.71.70	PTR	host-216-57-71-70.cal.net
216.57.71.71	PTR	host-216-57-71-71.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
216.57.71.76	PTR	host-216-57-71-76.cal.net
216.57.71.76	PTR	cnmaestro1.cal.net
216.57.71.77	PTR	host-216-57-71-77.cal.net
216.57.71.78	PTR	host-216-57-71-78.cal.net
216.57.71.79	PTR	host-216-57-71-79.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	PTR	host-216-57-71-110.cal.net
216.57.71.110	A	mail.mineraldrop.com
216.57.71.110	A	dietdropsonline.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.waddellracing.com
216.57.71.209	A	mail.resourceaccords.com
216.57.71.211	A	mail.rescuechurchofchrist.org
216.57.71.212	A	mail.caltrailerworks.com
216.57.71.214	PTR	host-216-57-71-214.cal.net
216.57.71.215	A	thenaturemother.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
216.57.71.218	A	mail.rdhill.com
216.57.71.218	A	rdhill.com
216.57.71.220	A	purebase.com
216.57.71.222	PTR	host-216-57-71-222.cal.net
216.57.71.222	A	thecaliforniagarden.org
216.57.71.222	A	californiawinetalk.com
216.57.71.238	PTR	sys.cal.net
216.57.71.238	A	cal.net
216.57.71.238	A	www.cal.net
216.57.71.244	A+PTR	sys.cal.net
216.57.71.254	A	wispprequal.com