Robtex

Up: 192.100.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.100.230.0/25
Down right: 192.100.230.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.100.230.2	PTR	vweb02up.academic.mixcoac.upmx.mx
192.100.230.2	A	terraza.up.edu.mx
192.100.230.2	A	www.upanamericana.edu.mx
192.100.230.9	A	google.up.edu.mx
192.100.230.21	A	upboard.up.edu.mx
192.100.230.30	A+PTR	ichat.prepaup.edu.mx
192.100.230.30	A+PTR	macserver.prepaup.edu.mx
192.100.230.30	PTR	natcdc.academic.mixcoac.upmx.mx
192.100.230.31	A+PTR	biblioesdai.academic.mixcoac.upmx.mx
192.100.230.31	A	glifos.esdai.edu.mx
192.100.230.35	A	operativo.upsite.upmx.mx
192.100.230.57	A	webps.academic.mixcoac.upmx.mx
192.100.230.61	PTR	ras05up.academic.mixcoac.upmx.mx
192.100.230.61	A	vpn.up.edu.mx
192.100.230.68	A	web01-upsite.academic.mixcoac.upmx.mx
192.100.230.75	PTR	dim01up.academic.mixcoac.upmx.mx
192.100.230.75	A	istmo.com.mx
192.100.230.75	A	itsmo.mx
192.100.230.82	A+PTR	www.upsite.upmx.mx
192.100.230.82	A+PTR	protocolo.academic.mixcoac.upmx.mx
192.100.230.137	A	biblio.upmx.mx
192.100.230.148	A	up.edu.mx
192.100.230.148	A	www.upanamericana.mx
192.100.230.148	A	www.up.edu.mx
192.100.230.153	A+PTR	crm02-upsite.academic.mixcoac.upmx.mx
192.100.230.165	A+PTR	campus.upsite.upmx.mx
192.100.230.172	A	claustro.up.edu.mx
192.100.230.172	A	unestudiantecomotu.up.edu.mx
192.100.230.172	A	prepaup.edu.mx
192.100.230.174	PTR	proxyti4.academic.mixcoac.upmx.mx
192.100.230.175	PTR	infohub02-upsite.academic.mixcoac.upmx.mx
192.100.230.183	A	www.up.edu.mx
192.100.230.195	A+PTR	xendesktop.up.edu.mx
192.100.230.211	A+PTR	web06-upsite.academic.mixcoac.upmx.mx
192.100.230.211	A	campus.upsite.upmx.mx
192.100.230.214	PTR	dns02bup.academic.mixcoac.upmx.mx
192.100.230.214	A	dns2.panamericana.mx
192.100.230.214	A	dns2.opusdei.com.mx
192.100.230.218	A	alumno.up.edu.mx
192.100.230.222	A	web04-upsite.academic.mixcoac.upmx.mx
192.100.230.224	A	glifos.esdai.edu.mx
192.100.230.234	A	biblio.upmx.mx