Robtex

Up: 156.154.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 156.154.24.0/22
Down right: 156.154.28.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
156.154.24.22	A	neuvpn2.neustar.biz
156.154.24.32	A+PTR	dc-nat.neustar.biz
156.154.24.39	A+PTR	chntsfauth01-nat.neustar.com
156.154.24.39	PTR	chntsfauth01-nat.nc.neustar.com
156.154.24.51	PTR	chvndprapvip1.va.neustar.com
156.154.24.59	A+PTR	whois-tel.neustar.biz
156.154.24.59	A	www.whois.nic.tel
156.154.24.59	A	whois.nic.tel
156.154.24.60	A+PTR	ga-tel.neustar.biz
156.154.24.89	A	chihmail3.neustar.com
156.154.24.90	A	chihmail4.neustar.com
156.154.24.92	PTR	www2.nationalpooling.com
156.154.24.92	A	numberpool.com
156.154.24.93	A+PTR	scp2.nationalpooling.com
156.154.24.116	A+PTR	www2.nationalnanpa.com
156.154.24.138	A+PTR	ns3.neustar.com
156.154.24.138	A+PTR	pine.neustar.com
156.154.24.139	A	ns4.neustar.com
156.154.24.147	PTR	neustar-registry.biz
156.154.24.147	PTR	neustarregistry.biz
156.154.24.147	PTR	neulevel.cn
156.154.24.170	A+PTR	ns2.parkco3.neustar.biz
156.154.24.171	A+PTR	vpn2.neustar.biz
156.154.24.204	A+PTR	jabber.neustar.biz
156.154.24.205	A+PTR	ns2.parkco1.neustar.biz
156.154.24.206	A+PTR	ns2.parkco2.neustar.biz
156.154.24.209	A	chspfs1.neustar.com
156.154.24.235	A+PTR	gns2.neustar.com
156.154.24.240	A+PTR	ns-backup.neustar.com
156.154.24.253	A+PTR	gns9.neustar.com
156.154.25.9	A	*.dnsadvantage.com
156.154.25.11	A	siteseal.ultradns.net
156.154.25.12	A	ci.alma.ne.us
156.154.25.12	A	co.brown.ne.us
156.154.25.28	A	interestedin.us
156.154.25.33	A+PTR	itrs-charlotte.neustar.biz
156.154.25.38	A+PTR	wmrs-hv.neustar.biz
156.154.25.39	A	ch.wpm.neustar.biz
156.154.25.46	A	analytics2.neustar.biz
156.154.25.48	A	browsermob.com
156.154.25.48	A	www.browsermob.com
156.154.25.85	A+PTR	co.neustar.biz
156.154.25.87	PTR	barcode.neustar.biz
156.154.25.87	A	nsbcs.biz
156.154.25.87	A	nu2.us
156.154.25.91	A+PTR	pendingdelete-co.neustar.biz
156.154.25.92	A+PTR	expired-co.neustar.biz
156.154.25.94	A	whois.nic.co
156.154.25.94	A	co.whois-servers.net
156.154.25.96	PTR	gomocode.com
156.154.25.96	PTR	gomocodes.com
156.154.25.100	PTR	usblog.neustar.us
156.154.25.100	A+PTR	pr.ds02.neustar.biz
156.154.25.104	A+PTR	mx2.neustar.com
156.154.25.104	A+PTR	smartmail.neustar.com
156.154.25.109	A+PTR	idx.neustar.biz
156.154.25.118	A	www2.webmetrics.com
156.154.25.125	PTR	gomocode.biz
156.154.25.125	PTR	gomocodes.biz
156.154.25.125	PTR	chgomocode.neustar.biz
156.154.25.166	A	stagingwww2.webmetrics.com
156.154.25.166	A	chwmstage.webmetrics.com