Robtex

Up: 91.214.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.214.72.0/23
Down right: 91.214.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.214.72.33	A+PTR	ns1.rpengineering.it
91.214.72.34	A+PTR	ns2.rpengineering.it
91.214.72.35	PTR	ns3.rpengineering.it
91.214.72.36	PTR	ns4.rpengineering.it
91.214.72.38	PTR	websrv1.rpengineering.it
91.214.72.38	A	mail.17ghz.it
91.214.72.38	A	mail.stampedintorni.com
91.214.72.40	PTR	websrv3.rpengineering.it
91.214.72.40	A	comefarecucina.com
91.214.72.40	A	mail.ultimenapoli.com
91.214.72.98	A	risorseambientali.it
91.214.72.239	A+PTR	mx.motortecnica.com
91.214.72.239	A	mail.motortecnica.com
91.214.72.239	A	motortecnica.com
91.214.73.2	PTR	ircomputer-static-1.rpengineering.it
91.214.73.2	A	mail.doppiozero.it
91.214.73.2	A	mail.westsud.com
91.214.73.3	PTR	ircomputer-static-2.rpengineering.it
91.214.73.4	PTR	ircomputer-static-3.rpengineering.it
91.214.73.4	A	mail.prav.it
91.214.73.4	A	ircomputer-3.rpengineering.it
91.214.73.74	PTR	91-214-73-74.rpengineering.it
91.214.73.74	A	mail.fatrotek.com
91.214.73.130	PTR	91-214-73-130.rpengineering.it
91.214.73.130	A	mail.aebstudio.com
91.214.73.139	A+PTR	mail.positivonet.it
91.214.73.139	A+PTR	91-214-73-139.rpengineering.it
91.214.73.143	A+PTR	91-214-73-143.rpengineering.it
91.214.73.143	A	websrvlin.rpengineering.it
91.214.73.143	A	scuolaremotti.it
91.214.73.144	A	mail.sparepartsit.it
91.214.73.144	A	sparepartsit.it
91.214.73.154	A	delucaitalia.com
91.214.73.154	A	ns5.rpengineering.it
91.214.73.154	A	ilcavalieredeiconti.it
91.214.73.198	A+PTR	91-214-73-198.rpengineering.it
91.214.73.199	A	mbox.volawifi.it
91.214.73.204	A	hotspot.volawifi.it
91.214.73.204	A	volawifi.it
91.214.73.205	A	volawifi.it
91.214.73.205	A	ns.volawifi.it
91.214.73.206	A	volawifi.it
91.214.73.206	A	dns2.volawifi.it
91.214.73.238	PTR	91-214-73-238.rpengineering.it
91.214.74.45	A	91-214-74-45.rpengineering.it
91.214.74.64	A	91-214-74-64.rpengineering.it
91.214.74.118	A	91-214-74-118.rpengineering.it
91.214.74.128	A	91-214-74-128.rpengineering.it
91.214.74.137	A	91-214-74-137.rpengineering.it
91.214.74.153	A	91-214-74-153.rpengineering.it
91.214.74.155	A+PTR	91-214-74-155.rpengineering.it
91.214.74.165	A	91-214-74-165.rpengineering.it
91.214.74.216	A+PTR	91-214-74-216.rpengineering.it
91.214.74.221	A	91-214-74-221.rpengineering.it
91.214.74.229	A	91-214-74-229.rpengineering.it
91.214.74.238	A	91-214-74-238.rpengineering.it
91.214.75.120	PTR	91-214-75-120.rpengineering.it
91.214.75.140	A+PTR	91-214-75-140.rpengineering.it
91.214.75.149	A	91-214-75-149.rpengineering.it
91.214.75.208	A	91-214-75-208.rpengineering.it