Robtex

Up: 216.166.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.166.16.0/22
Down right: 216.166.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.166.16.1	PTR	216-166-16-1.fwd.datafoundry.com
216.166.16.36	A	ironport.arthrocare.com
216.166.16.38	A	wmail.arthrocare.com
216.166.16.42	A+PTR	216-166-16-42.fwd.datafoundry.com
216.166.16.42	A	connect.arthrocare.com
216.166.16.42	A	www.arthrocare.com
216.166.16.51	A+PTR	smtp.arthrocare.com
216.166.16.51	A	smtp2.arthrocare.com
216.166.16.51	A	216-166-16-51.fwd.datafoundry.com
216.166.16.77	A	216-166-16-77.fwd.datafoundry.com
216.166.16.86	A	cfabogados.com
216.166.16.86	A	venio.com.mx
216.166.16.86	A	imanar.com
216.166.16.101	A	ondocs.com
216.166.16.101	A	www.pdfcomplete.com
216.166.16.101	A	www.ondocs.com
216.166.16.103	A	support.pdfcomplete.com
216.166.16.105	PTR	216-166-16-105.fwd.datafoundry.com
216.166.16.111	A	srv10.pdfcomplete.com
216.166.16.121	A	mail.pdfcomplete.com
216.166.16.132	A	srv11.pdfcomplete.com
216.166.16.134	A	216-166-16-134.fwd.datafoundry.com
216.166.16.163	A+PTR	mail2.costep.org
216.166.17.17	PTR	216-166-17-17.fwd.datafoundry.com
216.166.17.17	A	kanaly.com
216.166.17.17	A	www.kanaly.com
216.166.17.33	A	mail.straightedgehosting.com
216.166.17.67	A+PTR	mx1.allclearid.com
216.166.17.68	A	mx2.allclearid.com
216.166.17.69	A	mx3.allclearid.com
216.166.17.80	PTR	www.allclearid.com
216.166.17.81	A+PTR	my.allclearid.com
216.166.17.83	A+PTR	enroll.allclearid.com
216.166.17.85	A	debix.com
216.166.17.85	A	www.debix.com
216.166.17.90	PTR	www.acid-qa.com
216.166.17.95	A	dbx-qa.com
216.166.17.95	A	www.dbx-qa.com
216.166.17.96	PTR	support.dbx-qa.com
216.166.17.181	A	216-166-17-181.fwd.datafoundry.com
216.166.17.185	A	uberminx.com
216.166.17.191	A	momaenterprise.com
216.166.17.192	PTR	216-166-17-192.fwd.datafoundry.com
216.166.17.192	A	blog.wefeelsecure.com
216.166.17.192	A	wefeelsecure.com
216.166.17.197	A	216-166-17-197.fwd.datafoundry.com
216.166.17.209	A+PTR	216-166-17-209.fwd.datafoundry.com
216.166.17.209	A	00mobile009.com
216.166.17.210	PTR	216-166-17-210.fwd.datafoundry.com
216.166.17.222	A	00mobile002.com
216.166.17.223	A	00mobile003.com
216.166.17.224	PTR	216-166-17-224.fwd.datafoundry.com
216.166.17.224	A	00mobile004.com
216.166.17.225	PTR	216-166-17-225.fwd.datafoundry.com
216.166.17.225	A	00mobile005.com
216.166.17.226	A+PTR	216-166-17-226.fwd.datafoundry.com
216.166.17.226	A	00mobile006.com
216.166.17.227	PTR	216-166-17-227.fwd.datafoundry.com
216.166.17.232	PTR	216-166-17-232.fwd.datafoundry.com
216.166.17.232	A	spyese.com
216.166.17.252	A	111-222-333-444.com
216.166.17.252	A	www.mobilefonex.com
216.166.17.252	A	333-444-555-666.info
216.166.18.9	A+PTR	216-166-18-9.fwd.datafoundry.com
216.166.18.9	A	mpbf.com
216.166.18.15	A	www.clickforensics.com
216.166.18.75	A	webmail.sageriderinc.com
216.166.18.153	A	hotelratescan.com
216.166.18.211	PTR	216-166-18-211.fwd.datafoundry.com
216.166.18.243	A	globalhotelexchange.com
216.166.18.246	A	gldknowhow.com
216.166.18.246	A	gld5.com
216.166.18.247	A	volunteerscheduling.org
216.166.18.248	PTR	216-166-18-248.fwd.datafoundry.com
216.166.18.248	A	avalonadvisorslp.com
216.166.18.248	A	houstonglobalinvestors.com
216.166.18.249	PTR	216-166-18-249.fwd.datafoundry.com
216.166.19.117	A	216-166-19-117.fwd.datafoundry.com
216.166.19.172	A	216-166-19-172.fwd.datafoundry.com
216.166.19.247	A	216-166-19-247.fwd.datafoundry.com
216.166.19.250	A+PTR	216-166-19-250.fwd.datafoundry.com
216.166.20.1	A+PTR	216-166-20-1.fwd.datafoundry.com
216.166.20.171	PTR	216-166-20-171.fwd.datafoundry.com
216.166.20.171	A	www.multitransfer.com
216.166.20.171	A	*.transnetwork.com
216.166.21.2	PTR	216-166-21-2.fwd.datafoundry.com
216.166.21.120	PTR	216-166-21-120.fwd.datafoundry.com
216.166.21.137	PTR	216-166-21-137.fwd.datafoundry.com
216.166.22.148	A	216-166-22-148.fwd.datafoundry.com
216.166.22.163	A+PTR	216-166-22-163.fwd.datafoundry.com
216.166.22.211	A+PTR	216-166-22-211.fwd.datafoundry.com
216.166.22.245	A	216-166-22-245.fwd.datafoundry.com
216.166.23.2	PTR	216-166-23-2.fwd.datafoundry.com
216.166.23.12	A	us.cardno.com
216.166.23.12	A	bst.us.cardno.com
216.166.23.20	A	cardnobowler.com.au
216.166.23.20	A	entrix.com
216.166.23.20	A	www.cooner.com
216.166.23.25	A+PTR	mx1.us.cardno.com
216.166.23.30	A	ssl.us.cardno.com
216.166.23.39	A	mx2.us.cardno.com
216.166.23.40	PTR	www.cardno.com
216.166.23.52	A	mx3.us.cardno.com
216.166.23.55	A	www.synodas.com
216.166.23.59	PTR	216-166-23-59.fwd.datafoundry.com
216.166.23.59	A	www.cardnoentrix.com
216.166.23.59	A	cardnoentrix.com
216.166.23.69	A	xpoasis.com
216.166.23.71	A	vision.atcassociates.com
216.166.23.71	A	paragoncapm.com
216.166.23.90	A+PTR	216-166-23-90.fwd.datafoundry.com
216.166.23.90	A	www.apti-learn.net
216.166.23.90	A	apti-learn.com
216.166.23.108	A	synodas.com
216.166.23.162	PTR	216-166-23-162.fwd.datafoundry.com
216.166.23.162	A	entrix.com
216.166.23.162	A	esjprojecteis.org