Robtex

Up: 185.15.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.15.168.0/23
Down right: 185.15.170.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.15.168.20	A+PTR	dns1.retemetis.net
185.15.168.21	A+PTR	dns2.retemetis.net
185.15.168.22	A	mx1.retemetis.net
185.15.168.23	A	mx2.retemetis.net
185.15.168.41	PTR	elearning.retemetis.net
185.15.169.3	A+PTR	maildns.intemaweb.com
185.15.169.3	A	services.intemaweb.com
185.15.169.3	A	maildns.seleta.it
185.15.169.4	A	web-intema.intemaweb.com
185.15.169.4	A	www.intemaweb.com
185.15.169.7	A	serviceecmairon.intemaweb.com
185.15.169.9	A	studiolisanti.it
185.15.169.15	PTR	posta.intemaweb.com
185.15.169.19	A	eurecart.eu
185.15.169.20	A	happywedding.it
185.15.169.25	A+PTR	mail.intemaweb.com
185.15.169.25	A	posta.intemaweb.com
185.15.169.132	PTR	ns1.1office.eu
185.15.169.149	A+PTR	host149-169-015-185.retemetis.net
185.15.169.149	A	mail1.consorzioasipz.it
185.15.169.195	A+PTR	host195-169-015-185.retemetis.net
185.15.169.204	A	mail.smartpaper.it
185.15.169.204	A	mail.smartest.it
185.15.169.204	A	posta.smartest.it
185.15.170.108	A+PTR	host108-170-015-185.retemetis.net
185.15.171.35	A+PTR	host035-171-015-185.retemetis.net
185.15.171.88	A	host088-171-015-185.retemetis.net