Robtex

Up: 5.1.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.1.32.0/22
Down right: 5.1.36.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.1.32.1	A+PTR	gw.prisconetworks.com
5.1.32.2	A+PTR	obelix.prisconetworks.com
5.1.32.3	A+PTR	asterisk.prisconetworks.com
5.1.32.4	A	ipam.prisconetworks.com
5.1.32.8	PTR	rhotspots.prisconetworks.com
5.1.32.9	PTR	rpppoe2.prisconetworks.com
5.1.32.10	A+PTR	speedtest.prisconetworks.com
5.1.32.11	PTR	prisco.prisconetworks.com
5.1.32.15	A	webmail.prisconetworks.com
5.1.32.16	PTR	virt1.prisconetworks.com
5.1.32.17	A+PTR	desktop.prisconetworks.com
5.1.32.18	A+PTR	mon.prisconetworks.com
5.1.32.19	PTR	priscotik.prisconetworks.com
5.1.32.20	A	zabbix.prisconetworks.com
5.1.32.21	A	gossan.prisconetworks.com
5.1.32.24	A+PTR	hora.prisconetworks.com
5.1.32.25	A+PTR	web.prisconetworks.com
5.1.32.26	A+PTR	plesk.prisconetworks.com
5.1.32.26	A	mail.floristerialabisbal.com
5.1.32.27	PTR	mysql.prisconetworks.com
5.1.32.32	A+PTR	dns1.prisconetworks.com
5.1.32.33	A+PTR	dns2.prisconetworks.com
5.1.32.34	A+PTR	mail.prisconetworks.com
5.1.32.34	A	mail.lescorones.com
5.1.32.35	PTR	hotspots-01.prisconetworks.com
5.1.32.70	A+PTR	mx.raclus.net
5.1.32.94	PTR	pn-32.94.priscocloud.net
5.1.32.107	PTR	pppoeradius.prisconetworks.com
5.1.32.145	A+PTR	vps.chusito.es
5.1.32.145	A	mail.chusito.es
5.1.32.145	A	chusito.es
5.1.32.146	PTR	ns1.radu.cat
5.1.32.147	PTR	pn-32.147.priscocloud.net
5.1.32.150	PTR	mail.radu.cat
5.1.32.152	A+PTR	ns2.radu.cat
5.1.32.153	A+PTR	seafile.prisconetworks.com
5.1.32.154	PTR	seafile.radu.cat
5.1.32.154	A	losbarkitos.com
5.1.32.154	A	marinaferry.info
5.1.32.156	PTR	rmon.radu.cat
5.1.32.160	A+PTR	testpi.es
5.1.32.161	A+PTR	mail-01.prisconetworks.com
5.1.32.162	A+PTR	mail-02.prisconetworks.com
5.1.32.171	A+PTR	mx-dev.raclus.net
5.1.32.198	A+PTR	mx4.raclus.net
5.1.32.199	A+PTR	mx5.raclus.net
5.1.32.224	A+PTR	mx1.raclus.net
5.1.32.225	A+PTR	mx2.raclus.net
5.1.32.226	A+PTR	mx3.raclus.net
5.1.32.231	A	priscocloud.net
5.1.32.232	A+PTR	raclus.net
5.1.32.238	A+PTR	mail.priscocloud.net
5.1.32.238	A	mail.priscomail.net
5.1.32.239	PTR	pn-32.239.priscocloud.net
5.1.32.239	A	ns1.priscocloud.net
5.1.32.240	PTR	pn-32.240.priscocloud.net
5.1.32.240	A	ns2.priscocloud.net
5.1.33.1	PTR	pn-33.1.prisconetworks.com
5.1.33.5	PTR	redwimax-33-5.prisconetworks.com
5.1.33.8	PTR	pn-33.8.prisconetworks.com
5.1.33.195	PTR	pn-33.195.prisconetworks.com
5.1.34.11	PTR	redwimax-34-11.prisconetworks.com
5.1.34.11	A	*.nauticcenter.com
5.1.34.11	A	correu.nauticcenter.com
5.1.34.22	PTR	pn-34.22.prisconetworks.com
5.1.34.28	PTR	pn-34.28.prisconetworks.com
5.1.36.2	PTR	pn-36.2.prisconetworks.com
5.1.36.8	PTR	fttn-static-36-8.prisconetworks.com
5.1.36.42	A+PTR	radu.cat
5.1.37.132	PTR	fttn-37-132.prisconetworks.com
5.1.37.148	PTR	pn-37.148.prisconetworks.com
5.1.37.148	A	vidvid.tk
5.1.38.2	PTR	club-nautic.prisconetworks.com
5.1.38.5	A	sipsecurity.net
5.1.38.9	PTR	radu.prisconetworks.com
5.1.38.20	PTR	pn-38.20.prisconetworks.com
5.1.38.31	PTR	pn-38.31.prisconetworks.com
5.1.38.31	A	remote.immonautic.com
5.1.38.125	PTR	pn-38.125.prisconetworks.com
5.1.38.125	A	mail.santsmetges.com
5.1.38.125	A	mail.hotelsantsmetges.com
5.1.38.129	PTR	pn-38.129.prisconetworks.com
5.1.38.129	A	mail.lafortalesa.com
5.1.38.129	A	mail.dormuseum.com
5.1.38.137	PTR	camping-las-palmeras.prisconetworks.com
5.1.38.138	A+PTR	adsl.nauticescala.com
5.1.38.152	PTR	notter.prisconetworks.com
5.1.38.153	PTR	canal10.prisconetworks.com
5.1.38.155	PTR	dorieg.prisconetworks.com
5.1.38.160	A+PTR	wimax.cnestartit.es
5.1.38.161	PTR	redwimaxprof-38-161.prisconetworks.com
5.1.39.6	PTR	pn-39.6.prisconetworks.com
5.1.39.25	PTR	pn-39.25.prisconetworks.com
5.1.39.29	PTR	pn-39.29.prisconetworks.com
5.1.39.30	PTR	pn-39.30.prisconetworks.com
5.1.39.89	PTR	pn-39.89.prisconetworks.com