Robtex

Up: 212.91.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 212.91.32.0/20
Down right: 212.91.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.91.32.5	A	rs4.rsadvnet.it
212.91.32.5	A	dns.rsadvnet.com
212.91.32.5	A	dns.rsadvnet.it
212.91.32.6	A	mail.barillafoodservice.fr
212.91.32.22	A	smtp.rsadvnet.com
212.91.32.40	A	smtp.rsadvnet.com
212.91.32.41	A	www4.rsadvnet.it
212.91.32.49	A	www.logisticamente.it
212.91.32.49	A	o-simonazziamerica.com
212.91.32.65	A	www.thebrandcompany.it
212.91.32.65	A	thebrandcompany.it
212.91.32.250	A	giovanniartusi.com
212.91.32.251	A	giovanniartusi.com
212.91.32.251	A	www.anpasemiliaromagna.org
212.91.32.251	A	o-dino.com
212.91.33.4	PTR	rs33dot4.rsadvnet.it
212.91.33.13	A	mail.meber.it
212.91.33.98	PTR	rs33dot98.rsadvnet.it
212.91.33.130	PTR	server.euroweb.it
212.91.33.130	A	mail1.asotech.it
212.91.33.131	PTR	rs33dot131.rsadvnet.it
212.91.33.198	A	mail.salumaria.com
212.91.33.253	A	mail.valyoufarm.com
212.91.34.2	A+PTR	rs34dot2.rsadvnet.it
212.91.34.53	A	rs34dot53.rsadvnet.it
212.91.34.108	A	rs34dot108.rsadvnet.it
212.91.34.209	A	rs34dot209.rsadvnet.it
212.91.35.2	A+PTR	rs35dot2.rsadvnet.it
212.91.35.2	A	mail.studiobettuzzi.com
212.91.35.17	A+PTR	rs35dot17.rsadvnet.it
212.91.35.25	A	rs35dot25.rsadvnet.it
212.91.35.64	A	rs35dot64.rsadvnet.it
212.91.35.85	A	rs35dot85.rsadvnet.it
212.91.35.130	A	rs35dot130.rsadvnet.it
212.91.35.142	A	rs35dot142.rsadvnet.it
212.91.35.162	A+PTR	rs35dot162.rsadvnet.it
212.91.35.190	A	rs35dot190.rsadvnet.it
212.91.35.234	A	rs35dot234.rsadvnet.it
212.91.35.242	A	rs35dot242.rsadvnet.it
212.91.36.1	PTR	gatewaydot36.rsadvnet.it
212.91.36.16	A	mail.bondani.it
212.91.36.19	A	posta2.fermac.it
212.91.36.19	A	rs36dot19.rsadvnet.it
212.91.36.23	A	rs36dot23.rsadvnet.it
212.91.36.33	PTR	firewall1.dataflow.it
212.91.36.33	A	smtp.bollicine.it
212.91.36.33	A	smtp.dataflow.it
212.91.36.47	A	rs36dot47.rsadvnet.it
212.91.36.66	A+PTR	rs36dot66.rsadvnet.it
212.91.36.75	A	rs36dot75.rsadvnet.it
212.91.36.78	A	mail.studiobettuzzi.com
212.91.36.85	A	rs36dot85.rsadvnet.it
212.91.36.97	A	rs36dot97.rsadvnet.it
212.91.36.98	A	rs36dot98.rsadvnet.it
212.91.36.107	A	mail.meber.it
212.91.36.126	A	rs36dot126.rsadvnet.it
212.91.36.134	A	rs36dot134.rsadvnet.it
212.91.36.154	A	rs36dot154.rsadvnet.it
212.91.36.172	A	rs36dot172.rsadvnet.it
212.91.36.173	A	rs36dot173.rsadvnet.it
212.91.36.174	A	rs36dot174.rsadvnet.it
212.91.36.175	A	rs36dot175.rsadvnet.it
212.91.36.195	A+PTR	rs36dot195.rsadvnet.it
212.91.36.196	A	rs36dot196.rsadvnet.it
212.91.36.197	A	rs36dot197.rsadvnet.it
212.91.36.198	A	rs36dot198.rsadvnet.it
212.91.36.248	A	rs36dot248.rsadvnet.it
212.91.36.251	A	rs36dot251.rsadvnet.it
212.91.37.5	A	mail.dieci.biz
212.91.37.5	A	mail.sportgate.it
212.91.37.6	A	ocme.com.mx