Robtex

Up: 207.151.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 207.151.152.0/22
Down right: 207.151.156.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
207.151.152.2	A+PTR	mx.interworld.net
207.151.152.2	A	mx1.interworld.net
207.151.152.6	A	spamalyzer6a.interworld.net
207.151.152.6	A	spamalyzer6.interworld.net
207.151.152.9	A+PTR	spamalyzer2.interworld.net
207.151.152.9	A	spamalyzer.interworld.net
207.151.152.9	A	mail.xpersonals.net
207.151.152.10	PTR	smtp-out.interworld.net
207.151.152.10	A	smtp-out.creative-wireless.net
207.151.152.27	PTR	host152-27.interworld.net
207.151.152.130	PTR	cust-mail.interworld.net
207.151.152.130	A	mail.dinner-4-one.com
207.151.152.130	A	mail.theoceancourse.com
207.151.152.131	PTR	webmail.interworld.net
207.151.152.146	PTR	mail.hometechworks.com
207.151.152.155	PTR	mail.panoscan.com
207.151.152.155	A	mail.crime-photo.com
207.151.152.155	A	mail.forensic-camera.com
207.151.152.163	PTR	mail.visitationschool.com
207.151.152.167	A	mail.goodspotdesign.com
207.151.152.168	PTR	cust-mail.interworld.net
207.151.152.174	A	mail.povkids.net
207.151.152.174	A	mail.povdesign.com
207.151.152.196	A	mail.adagencyinabox.com
207.151.152.243	A	utility2.interworld.net
207.151.153.2	A	web1.registrationworld.net
207.151.153.45	A	mail.livingtorahjudaica.com
207.151.153.45	A	domainspamfilter.com
207.151.153.45	A	mail.webdesktop.com
207.151.153.142	A	hideho.com
207.151.155.11	A	valley-gw.tvwireless.net
207.151.156.17	PTR	host156-17.interworld.net
207.151.156.66	A+PTR	pacmult.com
207.151.156.66	A	*.bobfisher.com
207.151.156.66	A	*.pacmult.com
207.151.156.72	PTR	host156-72.interworld.net
207.151.156.73	PTR	host156-73.interworld.net
207.151.156.98	PTR	ubudesign.com
207.151.156.98	A	mail.i2drive.org
207.151.156.98	A	www.iamuare.com
207.151.156.99	PTR	ns2.ubudesign.com
207.151.156.130	A+PTR	mail.interworld.net
207.151.156.130	A	mail.power-sports.com
207.151.156.130	A	mac-mail1.interworld.net
207.151.156.131	PTR	mail.creative-wireless.net
207.151.156.132	PTR	mail.50mhzandup.org
207.151.156.136	A	mail.bigasscomputer.com
207.151.156.136	A	mail.w6nob.net
207.151.156.139	A	mail.ham-radio.com
207.151.156.140	A	mail.highpointcomm.com
207.151.156.144	A+PTR	mail.pac-comm.com
207.151.156.145	A	mail.premierdatacom.com
207.151.156.148	A	mail.vawtsystems.com
207.151.156.148	A	mail.therflab.com
207.151.156.152	A	mail.ham-parts.com
207.151.156.152	A	mail.ham-parts.net
207.151.156.153	A	mail.womenbicyclingforum.com
207.151.156.153	A	mail.womenbicyclingforum.net
207.151.156.155	PTR	mail.targetedtutoringbyteachers.com
207.151.156.162	PTR	host156-162.interworld.net
207.151.156.163	PTR	host156-163.interworld.net
207.151.156.177	PTR	host156-177.interworld.net
207.151.156.226	PTR	host156-226.dlmla.com
207.151.156.233	PTR	host156-233.dlmla.com
207.151.158.2	A+PTR	dns1.registrationworld.net
207.151.159.9	PTR	dns1.registrationworld.net
207.151.159.66	A	customer-web.interworld.net
207.151.159.67	A	www.liferesort.com
207.151.159.98	A	ipmonitor3.interworld.net
207.151.159.100	PTR	mirror4.interworld.net
207.151.159.100	A	mirror.interworld.net
207.151.159.100	A	mirror2.interworld.net
207.151.159.109	A	rw-nagios.interworld.net
207.151.159.161	A	router159-161.interworld.net
207.151.159.170	A	utility.interworld.net
207.151.159.186	PTR	host159-186.interworld.net
207.151.159.186	A	mirror4.interworld.net
207.151.159.228	A	setup.interworld.net
207.151.159.230	A	ultimatejunkbox.net
207.151.159.230	A	n6sna.com
207.151.159.230	A	applereseller.com
207.151.159.232	PTR	unused-232.usmw.net
207.151.159.243	PTR	unused-243.usmw.net
207.151.159.252	PTR	unused-252.usmw.net