Robtex

Up: 200.91.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 200.91.80.0/22
Down right: 200.91.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.91.84.51	A+PTR	dns1.aldesa.com
200.91.84.51	A	aldesa.cr
200.91.84.106	PTR	ferreteriaelmar.com
200.91.84.106	PTR	cofersa.net
200.91.84.108	PTR	ns.ferreteriaelmar.com
200.91.84.108	PTR	ns.cofersa.net
200.91.84.172	PTR	ftp.mclogistica.com
200.91.84.172	PTR	mins.mclogistica.com
200.91.84.230	PTR	mail.cafebritt.com
200.91.85.131	PTR	febe.megasuper.com
200.91.85.147	A+PTR	ns.filtrosjsm.co.cr
200.91.85.147	A	genesiscrint.filtrosjsm.co.cr
200.91.85.147	A	dns2.filtrosjsm.co.cr
200.91.85.148	A+PTR	ns1.filtrosjsm.co.cr
200.91.85.237	PTR	filmotica.com
200.91.86.101	A	rextrak.net
200.91.86.101	A	rextrac.net
200.91.86.155	PTR	intercr.com
200.91.86.179	PTR	mail.coopeguanacaste.com
200.91.86.179	PTR	mail2.coopeguanacaste.com
200.91.86.179	PTR	www.coopeguanacaste.com
200.91.86.180	PTR	mail.coopeguanacaste.com
200.91.86.180	PTR	mail2.coopeguanacaste.com
200.91.86.180	PTR	mail.coopeguanacaste.net
200.91.86.194	PTR	mail.florexpo.net
200.91.86.197	PTR	mail.florexpo.net
200.91.86.203	A+PTR	ns.corteidh.or.cr
200.91.86.204	A+PTR	ns1.corteidh.or.cr
200.91.86.217	PTR	217.default.location
200.91.87.34	PTR	coopronaranjorl.com
200.91.87.34	A	mail.coopronaranjorl.com
200.91.87.34	A	mail.espiritusantocoffeetour.com
200.91.87.50	A	actiononsports.com
200.91.87.117	A	ns1.pinturasur.com
200.91.87.118	PTR	correo.gruposur.com