Robtex

Up: 196.28.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 196.28.48.0/21
Down right: 196.28.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
196.28.48.67	A	ns1dsl.prtc.net
196.28.48.68	A+PTR	ns2dsl.prtc.net
196.28.48.77	A+PTR	prtstag.prtc.net
196.28.48.85	A	speed2.prtc.net
196.28.48.98	PTR	196-28-48-98.prtc.net
196.28.48.247	PTR	196-28-48-247.prtc.net
196.28.48.247	A	mail.prtdsl.net
196.28.48.247	A	mail.prtcdsl.com
196.28.49.74	A+PTR	coamo.puertorico.pr
196.28.49.74	A	www.coamo.puertorico.pr
196.28.49.86	A	placestogomagazine.com
196.28.49.116	PTR	196-28-49-116.prtc.net
196.28.49.117	PTR	www.caguas.gov.pr
196.28.49.117	A	mac.caguas.gov.pr
196.28.49.120	A	smtp.caguas.gov.pr
196.28.50.2	A	mail.robinsonschool.org
196.28.50.66	PTR	196-28-50-66.prtc.net
196.28.50.66	A	speed1.prtc.net
196.28.50.142	A	dns.guajana.net
196.28.50.162	PTR	www.cfse.gov.pr
196.28.50.179	PTR	avpexch.avp.pr.gov
196.28.50.198	A	r2d2.cunisanjuan.edu
196.28.50.202	A	mail.cunisanjuan.edu
196.28.50.203	A	classsvr.cunisanjuan.edu
196.28.50.205	A	ns2.cunisanjuan.edu
196.28.50.222	A	ns1.sanjuancapital.com
196.28.50.222	A	msj-dns-01.sanjuancapital.com
196.28.52.1	PTR	vpn.fw.bay.claropr.com
196.28.52.1	A	196-28-52-1.ao.prtc.net
196.28.52.1	A	www.ocspr.net
196.28.52.53	A	196-28-52-53.ao.prtc.net
196.28.53.121	A+PTR	mail2.mendezcopr.com
196.28.53.121	A	mail.mendezcopr.com
196.28.53.121	A	mx.mendezcopr.com
196.28.53.123	PTR	196-28-53-123.prtc.net
196.28.53.123	A	dns.mendezcopr.com
196.28.54.28	A	mail.orientalpr.com
196.28.54.202	A	mail.yscoffee.com
196.28.54.202	A	ccprb.com
196.28.54.202	A	prmailcc.coca-colapr.com
196.28.54.231	A	www.cee.pr.gov
196.28.54.231	A	cee.pr.gov
196.28.54.231	A	www.cee.gobierno.pr
196.28.55.72	PTR	196-28-55-72.prtc.net
196.28.55.72	A	deltamigo.com
196.28.56.4	PTR	196-28-56-4.prtc.net
196.28.56.14	A	speed2.prtc.net
196.28.56.17	PTR	196-28-56-17.prtc.net
196.28.56.33	PTR	196-28-56-33.prtc.net
196.28.56.48	PTR	196-28-56-48.prtc.net
196.28.56.49	PTR	196-28-56-49.prtc.net
196.28.56.50	PTR	mail.cespr.org
196.28.56.67	PTR	196-28-56-67.prtc.net
196.28.56.81	PTR	196-28-56-81.prtc.net
196.28.56.83	PTR	196-28-56-83.prtc.net
196.28.56.84	A	mail2.adea.pr.gov
196.28.56.97	PTR	196-28-56-97.prtc.net
196.28.56.98	PTR	196-28-56-98.prtc.net
196.28.56.112	PTR	196-28-56-112.prtc.net
196.28.56.129	PTR	a196-28-56-129.akamaitechnologies.com
196.28.56.144	PTR	196-28-56-144.prtc.net
196.28.56.147	PTR	mail.i-h-e.com
196.28.56.147	A	vpn.ihepr.com
196.28.56.148	A	mobile.ihepr.com
196.28.56.148	A	autodiscover.ihepr.com
196.28.56.176	PTR	196-28-56-176.prtc.net
196.28.56.192	PTR	196-28-56-192.prtc.net
196.28.56.194	PTR	196-28-56-194.prtc.net
196.28.56.195	PTR	196-28-56-195.prtc.net
196.28.56.208	PTR	196-28-56-208.prtc.net
196.28.56.210	PTR	196-28-56-210.prtc.net
196.28.56.241	PTR	196-28-56-241.prtc.net
196.28.56.243	PTR	196-28-56-243.prtc.net
196.28.57.25	A	micuenta.claropr.com
196.28.57.35	A	tiendaprt.telefonicapr.com
196.28.57.36	A	webmail.claropr.com
196.28.57.38	A	cps.telefonicapr.com
196.28.57.39	A	ebill.telefonicapr.com
196.28.57.48	A+PTR	prtfilter.prtc.net
196.28.57.48	A	vzwpr.filter.verizonwirelesspr.com
196.28.57.48	A	vzwpr.filter.claropr3g.com
196.28.57.50	PTR	www.mns.prtc.net
196.28.57.51	PTR	196-28-57-51.prtc.net
196.28.57.65	A+PTR	www.prtdsl.com
196.28.57.65	A	prtdsl.com
196.28.57.65	A	prtdsl.net
196.28.57.76	A	citrix.claropr.com
196.28.57.90	A	am.claropr.com
196.28.57.95	A	web.verizonwirelesspr.com
196.28.57.178	A	nazcasaatchi.com
196.28.57.178	A	www.nazcasaatchi.com
196.28.57.179	PTR	196-28-57-179.prtc.net
196.28.57.179	A	resources-pr.com
196.28.58.98	PTR	196-28-58-98.prtc.net
196.28.58.98	A	uaa.edu
196.28.58.98	A	dns1.uaa.edu
196.28.58.147	A	dns.grupovl.com
196.28.58.148	A	mail.grupovl.com
196.28.58.190	PTR	196-28-58-190.prtc.net
196.28.58.190	A	uibr-dns-prtc.uipr.edu
196.28.58.197	A	m1.airnetworks.com.pr
196.28.58.211	A+PTR	mail.vassalloindustries.com
196.28.59.3	PTR	196-28-59-3.prtc.net
196.28.59.19	PTR	196-28-59-19.prtc.net
196.28.59.50	PTR	196-28-59-50.prtc.net
196.28.59.64	PTR	196-28-59-64.prtc.net
196.28.59.66	PTR	196-28-59-66.prtc.net
196.28.59.112	PTR	196-28-59-112.prtc.net
196.28.59.128	PTR	196-28-59-128.prtc.net
196.28.59.131	PTR	196-28-59-131.prtc.net
196.28.59.160	PTR	196-28-59-160.prtc.net
196.28.59.177	PTR	196-28-59-177.prtc.net
196.28.59.192	PTR	196-28-59-192.prtc.net
196.28.59.193	PTR	196-28-59-193.prtc.net
196.28.59.224	PTR	196-28-59-224.prtc.net
196.28.60.89	PTR	196-28-60-89.prtc.net
196.28.60.89	A	americanpaperstore.com
196.28.60.89	A	www.americanpaperstore.com
196.28.60.98	PTR	smtp.i-h-e.com
196.28.60.98	A	smtp.ihepr.com
196.28.60.186	PTR	196-28-60-186.prtc.net
196.28.60.186	A	fmc400.com
196.28.61.1	A	cobi.coqui.net
196.28.61.2	A	cobito.coqui.net
196.28.61.4	A+PTR	home.coqui.net
196.28.61.11	A	mailserver.coqui.net
196.28.61.18	PTR	mx2.prtc.net
196.28.61.33	A+PTR	ns1.coqui.net
196.28.61.33	A	nameserver.coqui.net
196.28.61.33	A	ns1.prtc.net
196.28.61.34	PTR	ns2.coqui.net
196.28.61.34	A	ns2.prtc.net
196.28.61.49	A+PTR	zipi.coqui.net
196.28.61.50	A	brujula.coqui.net
196.28.61.51	A	roam2.coqui.net
196.28.61.66	PTR	nameserver.coqui.com
196.28.61.84	A	pedrosalsa.com
196.28.61.97	A+PTR	webmail.coqui.net
196.28.61.98	A+PTR	webmail1.coqui.net
196.28.61.99	A+PTR	webmail2.coqui.net
196.28.61.113	A+PTR	web.prtc.net
196.28.61.113	A	www.prtc.net
196.28.61.113	A	prtc.net
196.28.61.129	PTR	mail.prtc.net
196.28.61.130	A+PTR	filter.coqui.net
196.28.61.130	A	mx2.coqui.net
196.28.61.130	A	mail.sohoartfest.com
196.28.61.145	PTR	ns1.prtc.net
196.28.61.146	A+PTR	dnscache01.coqui.net
196.28.61.146	A	rad2.prtc.net
196.28.61.148	A	dnscache02.coqui.net
196.28.61.161	PTR	ns2.prtc.net
196.28.61.162	A+PTR	rad1.prtc.net
196.28.61.165	A	radius1.coqui.net
196.28.61.166	A	radius2.coqui.net
196.28.61.177	A+PTR	bill1.prtc.net
196.28.61.178	A+PTR	helpdesk.coqui.net
196.28.61.179	A+PTR	csc.prtc.net
196.28.61.180	A	autoreg.prtc.net
196.28.61.209	A	mail1.coqui.net
196.28.61.210	A	mail1.coqui.net
196.28.61.211	A+PTR	mail2.coqui.net
196.28.61.212	A	mail3.coqui.net
196.28.61.213	A	mail4.coqui.net
196.28.61.214	A	mail2.coqui.net
196.28.61.228	A	ftpconf.coqui.net
196.28.61.249	A	monitor.coqui.com
196.28.61.252	A	coqui-196-28-61-252.coqui.net
196.28.62.2	PTR	196-28-62-2.prtc.net
196.28.62.32	PTR	196-28-62-32.prtc.net
196.28.62.48	PTR	196-28-62-48.prtc.net
196.28.62.65	PTR	196-28-62-65.prtc.net
196.28.62.82	PTR	196-28-62-82.prtc.net
196.28.62.137	A	ns2.sispr.com
196.28.62.137	A	ns2.orbixhc.com
196.28.62.137	A	ns2.mc-21.com
196.28.62.182	PTR	196-28-62-182.prtc.net
196.28.62.183	PTR	196-28-62-183.prtc.net
196.28.62.184	A+PTR	mail.carmelo.com
196.28.62.184	A	www.mail-carmelo.com
196.28.62.184	A	mail-carmelo.com
196.28.63.5	A	mail.ediccollege.edu
196.28.63.5	A	mail.ediccollege.com
196.28.63.80	PTR	196-28-63-80.prtc.net
196.28.63.102	A	mail.cfse.gobierno.pr
196.28.63.102	A	ms10001.prsifc.com
196.28.63.146	PTR	196-28-63-146.prtc.net
196.28.63.161	PTR	196-28-63-161.prtc.net
196.28.63.176	PTR	196-28-63-176.prtc.net
196.28.63.177	PTR	196-28-63-177.prtc.net
196.28.63.186	A	cerveceriaindia.com
196.28.63.186	A	*.cerveceriaindia.com
196.28.63.186	A	mail.cerveceriaindia.com
196.28.63.208	PTR	196-28-63-208.prtc.net
196.28.63.210	A	prtcmax-tnt1.prtc.net
196.28.63.211	A	prtcmax-tnt2.prtc.net
196.28.63.212	A	prtcmax-tnt3.prtc.net
196.28.63.213	A	prtcmax-tnt4.prtc.net
196.28.63.224	PTR	196-28-63-224.prtc.net
196.28.63.225	PTR	gtwayp.cdorh.org
196.28.63.226	PTR	radp.cdorh.org
196.28.63.227	PTR	196-28-63-227.prtc.net
196.28.63.242	PTR	196-28-63-242.prtc.net
196.28.63.243	PTR	196-28-63-243.prtc.net