Robtex

Up: 66.201.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.201.48.0/22
Down right: 66.201.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.201.48.59	PTR	mail.bprproperties.com
66.201.48.195	A	ftp2.pacificbiosciences.com
66.201.49.38	A	*.reactnetwork.com
66.201.49.38	A	reactnetwork.com
66.201.49.40	PTR	foresight.org
66.201.49.40	A	lavrisha.com
66.201.49.130	A	ns2.adomodemo.com
66.201.49.150	A	mail.tarlton.com
66.201.49.162	A	nimbuscricket.com
66.201.49.164	A	merry.pingm.net
66.201.49.178	A	hq.trickplay.com
66.201.51.4	A	bsspmail.com
66.201.51.9	PTR	rev9.bssp.com
66.201.51.11	PTR	rev11.bssp.com
66.201.51.50	PTR	millcomputing.com
66.201.51.50	A	ootbcomp.com
66.201.51.50	A	mail.ootbcomp.com
66.201.51.67	PTR	mail.onstor.com
66.201.51.67	A	onstor.net
66.201.51.71	A+PTR	phd.onstor.com
66.201.51.80	A	exch1.onstor.com
66.201.51.105	A	labs.theranos.com
66.201.51.107	A	mail.onstor.com
66.201.51.107	A	mail.onstor.net
66.201.51.107	A	web1.theranos.com
66.201.51.108	A	web1.theranos.com
66.201.51.130	A	ip-66-201-51-130.communitywireless.coastside.net
66.201.51.131	PTR	mail.keysschool.com
66.201.51.131	A	ip-66-201-51-131.communitywireless.coastside.net
66.201.51.134	A+PTR	mail.keysschool.com
66.201.51.136	A	ip-66-201-51-136.communitywireless.coastside.net
66.201.51.140	A	ip-66-201-51-140.communitywireless.coastside.net
66.201.51.142	A	ip-66-201-51-142.communitywireless.coastside.net
66.201.51.148	A	ip-66-201-51-148.communitywireless.coastside.net
66.201.51.151	A	ip-66-201-51-151.communitywireless.coastside.net
66.201.51.152	A	ip-66-201-51-152.communitywireless.coastside.net
66.201.51.153	A	ip-66-201-51-153.communitywireless.coastside.net
66.201.51.154	A	ip-66-201-51-154.communitywireless.coastside.net
66.201.51.156	A	ip-66-201-51-156.communitywireless.coastside.net
66.201.51.160	A	ip-66-201-51-160.communitywireless.coastside.net
66.201.51.163	A	ip-66-201-51-163.communitywireless.coastside.net
66.201.51.164	A	ip-66-201-51-164.communitywireless.coastside.net
66.201.51.165	A	ip-66-201-51-165.communitywireless.coastside.net
66.201.51.175	A	ip-66-201-51-175.communitywireless.coastside.net
66.201.51.178	A	ip-66-201-51-178.communitywireless.coastside.net
66.201.51.179	A	ip-66-201-51-179.communitywireless.coastside.net
66.201.51.184	A	ip-66-201-51-184.communitywireless.coastside.net
66.201.51.187	A	dev.saavn.com
66.201.51.187	A	ip-66-201-51-187.communitywireless.coastside.net
66.201.51.195	A	ip-66-201-51-195.communitywireless.coastside.net
66.201.51.197	A	ip-66-201-51-197.communitywireless.coastside.net
66.201.51.199	A	ip-66-201-51-199.communitywireless.coastside.net
66.201.51.202	A	ip-66-201-51-202.communitywireless.coastside.net
66.201.51.204	A	ip-66-201-51-204.communitywireless.coastside.net
66.201.51.205	A	ip-66-201-51-205.communitywireless.coastside.net
66.201.51.212	A	ip-66-201-51-212.communitywireless.coastside.net
66.201.51.215	A	ip-66-201-51-215.communitywireless.coastside.net
66.201.51.216	A	ip-66-201-51-216.communitywireless.coastside.net
66.201.51.217	A	ip-66-201-51-217.communitywireless.coastside.net
66.201.51.218	A	ip-66-201-51-218.communitywireless.coastside.net
66.201.51.219	A	ip-66-201-51-219.communitywireless.coastside.net
66.201.51.228	A	ip-66-201-51-228.communitywireless.coastside.net
66.201.51.229	A	ip-66-201-51-229.communitywireless.coastside.net
66.201.51.232	A	ip-66-201-51-232.communitywireless.coastside.net
66.201.51.233	A	ip-66-201-51-233.communitywireless.coastside.net
66.201.51.241	A	ip-66-201-51-241.communitywireless.coastside.net
66.201.51.251	A	ip-66-201-51-251.communitywireless.coastside.net
66.201.53.137	PTR	oracle.nanosysinc.com
66.201.54.2	A	porcupine.acuitus.com
66.201.54.3	A	elderberry.acuitus.com
66.201.54.5	A	ergot.acuitus.com
66.201.54.66	A	ns2.ormanist.com
66.201.54.66	A	mail.papertunel.net
66.201.54.66	A	ns2.biovariant.com
66.201.54.86	A	mx2.labs.theranos.com
66.201.54.86	A	mx.labs.theranos.com
66.201.54.91	A	www.theranos.com
66.201.54.126	A	ts2.dreamhost.com
66.201.54.164	A	icloud-radio.com
66.201.54.195	A	mail.warpspeed-tv.com
66.201.54.210	PTR	mail.itp.edu
66.201.54.227	A	secure.theranos.com
66.201.54.246	A	bmwtechnology.com
66.201.55.1	A	fic-border.essexpropertytrust.com
66.201.55.3	A+PTR	pa-gateway.essexpropertytrust.com
66.201.55.4	A	pao-mx400.essexpropertytrust.com
66.201.55.16	PTR	exch02.essexpropertytrust.com
66.201.55.20	PTR	yardi.essexpropertytrust.com