Robtex

Up: 5.42.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.42.48.0/22
Down right: 5.42.52.0/22

IP	Type	Hostname
5.42.48.72	PTR	5-42-48-72.colomna.net
5.42.48.75	PTR	5-42-48-75.colomna.net
5.42.48.104	PTR	5-42-48-104.colomna.net
5.42.48.144	PTR	5-42-48-144.colomna.net
5.42.48.242	PTR	5-42-48-242.colomna.net
5.42.48.243	PTR	5-42-48-243.colomna.net
5.42.49.10	PTR	5-42-49-10.colomna.net
5.42.49.65	PTR	5-42-49-65.colomna.net
5.42.49.72	PTR	5-42-49-72.colomna.net
5.42.49.106	PTR	5-42-49-106.colomna.net
5.42.49.145	PTR	5-42-49-145.colomna.net
5.42.49.160	PTR	5-42-49-160.colomna.net
5.42.49.224	PTR	5-42-49-224.colomna.net
5.42.49.241	PTR	5-42-49-241.colomna.net
5.42.51.17	PTR	5-42-51-17.colomna.net
5.42.51.98	PTR	5-42-51-98.colomna.net
5.42.51.131	PTR	5-42-51-131.colomna.net
5.42.51.139	PTR	5-42-51-139.colomna.net
5.42.51.170	PTR	5-42-51-170.colomna.net
5.42.51.200	PTR	5-42-51-200.colomna.net
5.42.51.203	PTR	5-42-51-203.colomna.net
5.42.51.232	PTR	5-42-51-232.colomna.net
5.42.51.240	PTR	5-42-51-240.colomna.net
5.42.52.72	PTR	5-42-52-72.colomna.net
5.42.52.106	PTR	5-42-52-106.colomna.net
5.42.52.171	PTR	5-42-52-171.colomna.net
5.42.52.248	PTR	5-42-52-248.colomna.net
5.42.52.249	PTR	5-42-52-249.colomna.net
5.42.53.3	PTR	5-42-53-3.colomna.net
5.42.53.48	PTR	5-42-53-48.colomna.net
5.42.53.91	PTR	5-42-53-91.colomna.net
5.42.53.136	PTR	5-42-53-136.colomna.net
5.42.53.162	PTR	5-42-53-162.colomna.net
5.42.53.194	PTR	5-42-53-194.colomna.net
5.42.53.203	PTR	5-42-53-203.colomna.net
5.42.53.209	PTR	5-42-53-209.colomna.net
5.42.53.232	PTR	5-42-53-232.colomna.net
5.42.54.90	PTR	5-42-54-90.colomna.net
5.42.54.144	PTR	5-42-54-144.colomna.net
5.42.54.169	PTR	5-42-54-169.colomna.net
5.42.54.170	PTR	5-42-54-170.colomna.net
5.42.54.185	PTR	5-42-54-185.colomna.net
5.42.54.192	PTR	5-42-54-192.colomna.net
5.42.54.211	PTR	5-42-54-211.colomna.net
5.42.54.233	PTR	5-42-54-233.colomna.net
5.42.55.10	PTR	5-42-55-10.colomna.net
5.42.55.18	PTR	5-42-55-18.colomna.net
5.42.55.34	PTR	5-42-55-34.colomna.net
5.42.55.59	PTR	5-42-55-59.colomna.net
5.42.55.114	PTR	5-42-55-114.colomna.net
5.42.55.184	PTR	5-42-55-184.colomna.net