Robtex

Up: 72.13.32.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.13.32.0/25
Down right: 72.13.32.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.13.32.0	PTR	host0.mhp-fo.brn1.verisign.com
72.13.32.13	PTR	xnet1.mhp-fo.brn1.verisign.com
72.13.32.15	A+PTR	mdns.verisign.com
72.13.32.22	A+PTR	namestoreftp.verisign-grs.com
72.13.32.24	A	domainscope.com
72.13.32.25	A+PTR	ccrrp.verisign-grs.com
72.13.32.25	A	ccrrp.verisign-grs.net
72.13.32.25	A	admin.domainscope.com
72.13.32.26	A	tvrrp.verisign-grs.com
72.13.32.26	A	tvrrp.verisign-grs.net
72.13.32.27	A+PTR	bzrrp.verisign-grs.com
72.13.32.27	A	bzrrp.verisign-grs.net
72.13.32.29	PTR	accounts.verisigninc.com
72.13.32.31	A	bzwhois.verisign-grs.com
72.13.32.35	PTR	mx.www.tv
72.13.32.35	A	mx.enic.cc
72.13.32.35	A	tv2syd.tv
72.13.32.36	PTR	www.tv
72.13.32.37	PTR	www.enic.cc
72.13.32.38	PTR	oldwww.greatdomains.com
72.13.32.39	A	h39.s32.verisign-grs.com
72.13.32.40	PTR	portal.verisigninc.com
72.13.32.41	PTR	orl-abc.verisigneps.com
72.13.32.42	PTR	certificates.dnsassurance.com
72.13.32.43	PTR	dnsassurancesolutions.com
72.13.32.43	A	chats-rouges.eu
72.13.32.43	A	dunishop.fr
72.13.32.44	PTR	dnsassurance.com
72.13.32.45	PTR	dns-tool.com
72.13.32.46	PTR	api.dns-tool.com
72.13.32.47	PTR	tldmanager.vrsn.com
72.13.32.47	A	ons-registration.com
72.13.32.48	A+PTR	api.ons-registration.com
72.13.32.49	PTR	rdap.verisign.com
72.13.32.49	A	www.onsepc.com
72.13.32.49	A	onsepc.com
72.13.32.53	A+PTR	mail.rcc.verisign-grs.com
72.13.32.53	A	rcc.verisign-grs.com
72.13.32.55	A	verisignepctest.net
72.13.32.57	PTR	dc60-omi.verisigneps.com
72.13.32.58	PTR	whois.nic.name
72.13.32.60	PTR	nameepp.verisign-grs.com
72.13.32.61	PTR	nameweb.verisign-grs.com
72.13.32.65	A	support.verisigninc.com
72.13.32.66	PTR	metabase.moreover.com
72.13.32.68	A	pds.verisigninc.com
72.13.32.69	PTR	ct.moreover.com
72.13.32.69	A	portal.verisigninc.com
72.13.32.69	A	portal.verisign.com
72.13.32.73	PTR	feeds.weblogs.com
72.13.32.75	A+PTR	namingftp.verisign-grs.com
72.13.32.79	PTR	p.moreover.com
72.13.32.83	A+PTR	registrar.verisign-grs.com
72.13.32.83	A	webwhois.nic.bbva
72.13.32.83	A	webwhois.nic.ericsson
72.13.32.84	A	dotnameregistry.com
72.13.32.84	A	www.gnr.com
72.13.32.84	A	decentnames.com
72.13.32.85	A+PTR	dnssecpro.verisign.com
72.13.32.87	A	ns1-signed.verisign-grs.com
72.13.32.88	A	ns2-signed.verisign-grs.com
72.13.32.89	PTR	mx01.nic.name
72.13.32.90	PTR	mx02.nic.name
72.13.32.94	A	site1-relay4.verisign-grs.com
72.13.32.98	A+PTR	hostdist-a.verisign-grs.net
72.13.32.99	A+PTR	hostdist-b.verisign-grs.net
72.13.32.103	A+PTR	dnssecsigningservice.verisign-grs.com
72.13.32.104	A	dnssecsigningservice-csr.verisign-grs.com
72.13.32.105	A+PTR	dnssecsigningservice-ftp.verisign-grs.com
72.13.32.107	A	sugapi.verisign-grs.com
72.13.32.107	A	naming.verisign-grs.com
72.13.32.110	A+PTR	eval.verisigndns.com
72.13.32.110	A	ns1.live-zone.tv
72.13.32.112	A+PTR	api.verisigndns.com
72.13.32.114	A	kvernelandgroup.ca
72.13.32.114	A	joneslanglasalle-sandiego.com
72.13.32.114	A	joneslanglasalle-denver.com
72.13.32.120	A+PTR	ns27.verisign.com
72.13.32.123	PTR	www.dotgov.gov
72.13.32.124	PTR	gsa.dotgov.gov
72.13.32.125	PTR	csr.dotgov.gov
72.13.32.126	PTR	paypal.dotgov.gov
72.13.32.170	A+PTR	mx01.nic.name
72.13.32.171	A+PTR	mx02.nic.name
72.13.32.173	A+PTR	nameepp.verisign-grs.com
72.13.32.174	PTR	whois.nic.name
72.13.32.175	PTR	rzname.verisign-grs.com
72.13.32.175	A	nameweb.verisign-grs.com
72.13.32.177	A	webwhois.nic.name
72.13.32.178	A	ns39.verisign.com
72.13.32.184	A+PTR	nsmanager.verisign-grs.com
72.13.32.184	A	csr.verisign-grs.com
72.13.32.185	A+PTR	namestoressl.verisign-grs.com
72.13.32.186	A+PTR	nsmanager-otp.verisign-grs.com
72.13.32.188	PTR	sugepp.verisign-grs.com