Robtex

Up: 72.20.128.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 72.20.130.0/24
Down right: 72.20.131.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.20.130.29	A	mywhirlwindsteel.com
72.20.130.31	PTR	72-20-130-31.phonoscope.com
72.20.130.32	PTR	72-20-130-32.phonoscope.com
72.20.130.34	PTR	72-20-130-34.phonoscope.com
72.20.130.39	PTR	72-20-130-39.phonoscope.com
72.20.130.40	PTR	72-20-130-40.phonoscope.com
72.20.130.47	PTR	72-20-130-47.phonoscope.com
72.20.130.48	PTR	72-20-130-48.phonoscope.com
72.20.130.51	PTR	72-20-130-51.phonoscope.com
72.20.130.52	PTR	72-20-130-52.phonoscope.com
72.20.130.55	PTR	72-20-130-55.phonoscope.com
72.20.130.56	PTR	72-20-130-56.phonoscope.com
72.20.130.60	PTR	pixcrecent.phonoscope.com
72.20.130.63	PTR	72-20-130-63.phonoscope.com
72.20.130.64	PTR	72-20-130-64.cgg.com
72.20.130.75	PTR	strauss.cgg.com
72.20.130.166	A	harriscountycheckrecovery.com
72.20.130.190	A+PTR	mail.acmlogistics.com
72.20.130.205	PTR	72-20-130-205.phonoscope.com
72.20.130.250	A	ns1.advrealtime.com
72.20.131.5	A	mx3.techradium.com
72.20.131.22	A	mx1.techradium.com
72.20.131.43	A	mx5.techradium.com
72.20.131.43	A	ns11.techradium.net
72.20.131.43	A	*.techradium.net
72.20.131.46	A	mx2.techradium.com
72.20.131.49	A	smtp3.crimeweb.net
72.20.131.49	A	smtp7.crimeweb.net
72.20.131.49	A	smtp6.crimeweb.net
72.20.131.53	A	www.irisdispatch.com
72.20.131.53	A	irisdispatch.com
72.20.131.53	A	mx1.irisdispatch.com
72.20.131.56	A	webradium.com
72.20.131.56	A	*.webradium.com
72.20.131.56	A	mail.webradium.com
72.20.131.57	A	iriscommunity.com
72.20.131.77	A	mail.runpunchstudios.com
72.20.131.77	A	*.runpunchstudios.com
72.20.131.100	A	nexbillpayalert.com