Robtex

Up: 80.21.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 80.21.32.0/20
Down right: 80.21.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.21.32.47	A	host47-32-static.21-80-b.business.telecomitalia.it
80.21.32.72	A	host72-32-static.21-80-b.business.telecomitalia.it
80.21.32.104	A	host104-32-static.21-80-b.business.telecomitalia.it
80.21.32.143	A	host143-32-static.21-80-b.business.telecomitalia.it
80.21.32.176	A	host176-32-static.21-80-b.business.telecomitalia.it
80.21.32.200	A	host200-32-static.21-80-b.business.telecomitalia.it
80.21.33.71	A	host71-33-static.21-80-b.business.telecomitalia.it
80.21.33.163	A+PTR	host163-33-static.21-80-b.business.telecomitalia.it
80.21.33.182	A	host182-33-static.21-80-b.business.telecomitalia.it
80.21.33.250	A	host250-33-static.21-80-b.business.telecomitalia.it
80.21.34.25	A	host25-34-static.21-80-b.business.telecomitalia.it
80.21.34.29	A	mx2.assorgia.it
80.21.34.29	A	mx2.bluechannel.it
80.21.34.29	A	mx2.adunata.it
80.21.35.1	A	host1-35-static.21-80-b.business.telecomitalia.it
80.21.35.139	A	host139-35-static.21-80-b.business.telecomitalia.it
80.21.36.3	A+PTR	host3-36-static.21-80-b.business.telecomitalia.it
80.21.36.34	A+PTR	host34-36-static.21-80-b.business.telecomitalia.it
80.21.36.54	A	host54-36-static.21-80-b.business.telecomitalia.it
80.21.36.115	A	host115-36-static.21-80-b.business.telecomitalia.it
80.21.36.126	A	host126-36-static.21-80-b.business.telecomitalia.it
80.21.36.151	A	host151-36-static.21-80-b.business.telecomitalia.it
80.21.36.158	A	host158-36-static.21-80-b.business.telecomitalia.it
80.21.36.203	A	host203-36-static.21-80-b.business.telecomitalia.it
80.21.37.21	A	mail1.sklmed.it
80.21.37.22	A	mail2.sklmed.it
80.21.37.23	A	host23-37-static.21-80-b.business.telecomitalia.it
80.21.37.55	A	host55-37-static.21-80-b.business.telecomitalia.it
80.21.37.63	A	host63-37-static.21-80-b.business.telecomitalia.it
80.21.37.64	A	host64-37-static.21-80-b.business.telecomitalia.it
80.21.37.67	A+PTR	host67-37-static.21-80-b.business.telecomitalia.it
80.21.37.184	A	host184-37-static.21-80-b.business.telecomitalia.it
80.21.37.248	A	host248-37-static.21-80-b.business.telecomitalia.it
80.21.37.252	A	host252-37-static.21-80-b.business.telecomitalia.it
80.21.38.16	A	host16-38-static.21-80-b.business.telecomitalia.it
80.21.38.80	A	host80-38-static.21-80-b.business.telecomitalia.it
80.21.38.167	A	host167-38-static.21-80-b.business.telecomitalia.it
80.21.38.183	A	host183-38-static.21-80-b.business.telecomitalia.it
80.21.40.98	A	host98-40-static.21-80-b.business.telecomitalia.it
80.21.40.131	A	mail.studiosbordoni.it
80.21.40.131	A	mail.studiocucinella.it
80.21.40.180	A	host180-40-static.21-80-b.business.telecomitalia.it
80.21.41.212	A	mail.sitfr.it
80.21.47.17	A	host17-47-static.21-80-b.business.telecomitalia.it
80.21.49.27	A	ip04.deca-spa.com
80.21.49.28	A	ip05.deca-spa.com
80.21.49.29	A	ip06.deca-spa.com
80.21.49.65	A+PTR	host65-49-static.21-80-b.business.telecomitalia.it
80.21.49.67	A+PTR	host67-49-static.21-80-b.business.telecomitalia.it
80.21.51.35	A+PTR	mail.nova-spa.it
80.21.51.35	A	grupponova.it
80.21.51.35	A	www.nova-spa.it
80.21.51.112	A	host112-51-static.21-80-b.business.telecomitalia.it
80.21.51.143	A	host143-51-static.21-80-b.business.telecomitalia.it
80.21.51.208	A	host208-51-static.21-80-b.business.telecomitalia.it
80.21.51.224	A+PTR	host224-51-static.21-80-b.business.telecomitalia.it
80.21.52.1	PTR	host1-52-static.21-80-b.business.telecomitalia.it
80.21.52.99	A+PTR	host99-52-static.21-80-b.business.telecomitalia.it
80.21.52.243	A	mail.pappareale.net
80.21.52.243	A	mail.lagiocca.it
80.21.53.8	A	host8-53-static.21-80-b.business.telecomitalia.it
80.21.53.40	A	host40-53-static.21-80-b.business.telecomitalia.it
80.21.53.56	A	host56-53-static.21-80-b.business.telecomitalia.it
80.21.53.64	A	host64-53-static.21-80-b.business.telecomitalia.it
80.21.53.224	A+PTR	host224-53-static.21-80-b.business.telecomitalia.it
80.21.54.222	A	askanews.eu
80.21.54.222	A	www.ascachannel.it
80.21.54.222	A	tmnews.it
80.21.56.88	A	host88-56-static.21-80-b.business.telecomitalia.it
80.21.58.195	PTR	host195-58-static.21-80-b.business.telecomitalia.it
80.21.58.195	A	schultze.it
80.21.58.234	A	mail.lanuovaparati.it
80.21.59.27	A	carnevaleditempio.org
80.21.59.27	A	carnevaletempiese.eu
80.21.59.27	A	carnevaleditempio.com
80.21.59.91	A	soes.cloud
80.21.61.127	A	host127-61-static.21-80-b.business.telecomitalia.it
80.21.61.130	A	mx2.alliancemedical.it
80.21.61.223	A	host223-61-static.21-80-b.business.telecomitalia.it
80.21.62.15	A	host15-62-static.21-80-b.business.telecomitalia.it
80.21.62.32	A	host32-62-static.21-80-b.business.telecomitalia.it
80.21.62.80	A	host80-62-static.21-80-b.business.telecomitalia.it
80.21.62.96	A	host96-62-static.21-80-b.business.telecomitalia.it
80.21.62.191	A	host191-62-static.21-80-b.business.telecomitalia.it
80.21.62.200	A	host200-62-static.21-80-b.business.telecomitalia.it
80.21.62.240	A	host240-62-static.21-80-b.business.telecomitalia.it
80.21.63.39	A	host39-63-static.21-80-b.business.telecomitalia.it
80.21.63.71	A	host71-63-static.21-80-b.business.telecomitalia.it
80.21.63.96	A	host96-63-static.21-80-b.business.telecomitalia.it
80.21.63.184	A	host184-63-static.21-80-b.business.telecomitalia.it