Robtex

Up: 193.43.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.43.44.0/23
Down right: 193.43.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.43.44.1	A+PTR	mx.ccci.it
193.43.44.1	A	dns1.ccci.it
193.43.44.2	A+PTR	web.ccci.it
193.43.44.4	PTR	mail1.ccci.it
193.43.44.7	A+PTR	mxb.ccci.it
193.43.44.7	A	gw1.ccci.it
193.43.44.7	A	mx1.ccci.it
193.43.44.10	A+PTR	mxa.ccci.it
193.43.44.10	A	mx1.ccci.it
193.43.44.180	PTR	web01.ccci.it
193.43.44.180	A	succhiyoga.it
193.43.44.180	A	derbyblue.com
193.43.45.1	A+PTR	mail.ccci.it
193.43.45.1	A	dns.ccci.it
193.43.45.2	PTR	web.ccci.it
193.43.45.2	A	mail.cirio.it
193.43.45.3	A	citrix.ccci.it
193.43.45.4	A+PTR	mail1.ccci.it
193.43.45.4	A	domino.ccci.it
193.43.45.6	A+PTR	edigw.ccci.it
193.43.45.7	A+PTR	mx0.ccci.it
193.43.45.10	PTR	smtp.ccci.it
193.43.45.10	A	gw1.ccci.it
193.43.45.10	A	mx1.ccci.it
193.43.45.11	A	web.ccci.it
193.43.45.20	A+PTR	csg.ccci.it
193.43.45.21	A+PTR	apl.ccci.it
193.43.45.43	A+PTR	fax.ccci.it
193.43.45.106	PTR	notesmail6.ccci.it
193.43.45.108	PTR	notesmail8.ccci.it
193.43.45.110	A	notesmail10.ccci.it
193.43.45.111	A	notesmail11.ccci.it
193.43.45.112	A	notesmail12.ccci.it
193.43.45.113	A	notesmail13.ccci.it
193.43.45.115	A+PTR	notesmail15.ccci.it
193.43.45.118	A	ntsaint05.ccci.it
193.43.45.119	A+PTR	ntvauve04.ccci.it
193.43.45.120	A	nttaras03.ccci.it
193.43.45.127	A+PTR	wea.ccci.it
193.43.47.31	A	conserveitalia.it
193.43.47.31	A	jollycolombani.com