Robtex

Up: 200.59.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 200.59.16.0/22
Down right: 200.59.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.59.16.5	A+PTR	ns3.fratec.net
200.59.16.5	A	ns.fratec.com
200.59.16.5	A	www.fratec.net
200.59.16.6	A	cr.pool.ntp.org
200.59.16.6	A	0.cr.pool.ntp.org
200.59.16.8	A	ns1.lineasbasicas.com
200.59.16.8	A	ns2.lineasbasicas.com
200.59.16.11	A	elastix.fratec.com
200.59.16.15	A	mail2.fratec.net
200.59.16.17	A	www.cnetdemo.net
200.59.16.18	PTR	patica.fratec.com
200.59.16.18	A	smtp.politecnico.cr
200.59.16.18	A	www.politecnico.cr
200.59.16.33	PTR	ether3.mikrotik-bb-zeus.fratec.net
200.59.16.34	PTR	ntp4.fratec.net
200.59.16.34	A	cr.pool.ntp.org
200.59.16.34	A	mail.tecnodatos.com
200.59.16.35	PTR	www.promerc.net
200.59.16.40	PTR	mail.confides.co.cr
200.59.16.41	PTR	mail.auditsyscr.com
200.59.16.41	A	papelitoscr.com
200.59.16.41	A	mail.fun2winbingo.com
200.59.16.42	PTR	ftp.pachecocoto.com
200.59.16.43	PTR	mail.caferey.co.cr
200.59.16.48	A+PTR	mail.la506.com
200.59.16.48	A	conquistasessions.com
200.59.16.48	A	mail.conquistasessions.com
200.59.16.49	PTR	mail.seysacr.com
200.59.16.50	PTR	ntp3.fratec.net
200.59.16.50	A	cr.pool.ntp.org
200.59.16.50	A	0.cr.pool.ntp.org
200.59.16.51	PTR	www.fcacostarica.com
200.59.16.61	A	a.test-ipv6.fratec.net
200.59.16.61	A	test-ipv6.fratec.net
200.59.16.62	A	cacacri-pi-260.fratec.net
200.59.16.65	A+PTR	ether3.mikrotik-bb-zeus.fratec.net
200.59.16.82	PTR	mail.addax.cc
200.59.16.83	A	asccr.com
200.59.16.83	A	dinadeco.go.cr
200.59.16.83	A	addax.cr
200.59.16.87	PTR	tmail.addax.cc
200.59.16.89	A	mapas.sutel.go.cr
200.59.16.90	A	felixtherobot.com
200.59.16.91	A	mail.addax.cc
200.59.16.91	A	ns5.addaxdevelopment.com
200.59.16.122	A	reylinx.caferey.co.cr
200.59.17.27	PTR	wlan1.mikrotik-arrocera-barranca.fratec.net
200.59.17.34	PTR	wlan1.mikrotik-posada-belen.fratec.net
200.59.17.147	PTR	wlan1.mikrotik-fonkart.fratec.net
200.59.17.147	A	fiklindora.com
200.59.17.187	PTR	wlan1.mikrotik-dr-saborio.fratec.net
200.59.17.227	A	www.megasuper.com
200.59.17.227	A	ftp.megasuper.com
200.59.17.227	A	dns2.mega-super.com
200.59.17.229	PTR	rpc.megasuper.com
200.59.18.26	PTR	asepipasa.com
200.59.18.42	A+PTR	mail.jiquisa.com
200.59.18.162	A+PTR	router-rere.fratec.net
200.59.18.162	A	www.gruporere.com
200.59.18.162	A	retanacr.com
200.59.18.202	PTR	wlan1.mikrotik-ph-chucas.fratec.net
200.59.18.222	A+PTR	ns.cyl.co.cr
200.59.18.222	A	cyl.cyl.co.cr
200.59.18.222	A	ns1.cyl.co.cr
200.59.19.6	A	ids.fratec.net
200.59.19.6	A	speedtest.fratec.net
200.59.19.106	PTR	wlan1.mikrotik-top-cell-pz.fratec.net
200.59.19.162	A	gruporere.com
200.59.19.210	A	ns3.quarzo.com
200.59.20.35	A	server.smtp2millenium.com
200.59.20.35	A	mail.smtp2millenium.com
200.59.20.35	A	ns2.smtp2millenium.com
200.59.21.1	PTR	router2.fratec.net
200.59.21.5	A+PTR	www.fratec.net
200.59.21.5	A	cr.pool.ntp.org
200.59.21.5	A	fratec.net
200.59.21.36	A+PTR	nmail3.addax.cc
200.59.21.36	A	nmail3.addax.cr
200.59.21.36	A	nmail3.cerrodelamuerte.com
200.59.22.104	A	www.contel.co.cr
200.59.22.129	PTR	www.crtelecom.com
200.59.22.129	A	mail.crtelecom.com
200.59.22.129	A	crtelecom.com
200.59.22.130	A	www.gnd.cr
200.59.22.130	A	desarrollos.co.cr
200.59.22.130	A	jmmarketindex.com
200.59.22.131	PTR	gnd-131.dnshost1.com
200.59.22.132	PTR	gnd-132.dnshost1.com
200.59.22.140	PTR	gnd-140.dnshost1.com
200.59.22.140	A	remusacr.com
200.59.22.140	A	sipcr.com
200.59.22.145	A	mail.gnd.cr
200.59.22.145	A	mail.desarrollos.co.cr
200.59.22.145	A	gndcr.com
200.59.22.156	PTR	gnd-156.dnshost1.com
200.59.22.156	A	ns3.dnshost3.com
200.59.22.156	A	ns1.dnshost1.com
200.59.22.158	PTR	gnd-158.dnshost1.com
200.59.22.158	A	ns2.dnshost2.com
200.59.22.178	A	ss2.sipcr.net
200.59.23.17	A	reventazon.cofersa.cr