Robtex

Up: 81.60.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 81.60.0.0/19
Down right: 81.60.32.0/19

IP	Type	Hostname
81.60.0.0	A+PTR	81.60.0.0.dyn.user.ono.com
81.60.0.24	A	81.60.0.24.dyn.user.ono.com
81.60.1.2	A+PTR	81.60.1.2.dyn.user.ono.com
81.60.1.152	A+PTR	81.60.1.152.dyn.user.ono.com
81.60.1.221	PTR	81.60.1.221.dyn.user.ono.com
81.60.2.9	A+PTR	81.60.2.9.dyn.user.ono.com
81.60.2.75	PTR	81.60.2.75.dyn.user.ono.com
81.60.2.118	A+PTR	81.60.2.118.dyn.user.ono.com
81.60.4.214	A+PTR	81.60.4.214.dyn.user.ono.com
81.60.5.34	A	81.60.5.34.dyn.user.ono.com
81.60.5.80	PTR	81.60.5.80.dyn.user.ono.com
81.60.6.147	A+PTR	81.60.6.147.dyn.user.ono.com
81.60.7.180	A+PTR	81.60.7.180.dyn.user.ono.com
81.60.7.236	A+PTR	81.60.7.236.dyn.user.ono.com
81.60.8.23	A+PTR	81.60.8.23.dyn.user.ono.com
81.60.10.231	A+PTR	81.60.10.231.dyn.user.ono.com
81.60.11.2	A+PTR	81.60.11.2.dyn.user.ono.com
81.60.18.2	A+PTR	81.60.18.2.dyn.user.ono.com
81.60.20.2	PTR	81.60.20.2.dyn.user.ono.com
81.60.21.2	A	81.60.21.2.dyn.user.ono.com
81.60.21.152	A+PTR	81.60.21.152.dyn.user.ono.com
81.60.22.2	A+PTR	81.60.22.2.dyn.user.ono.com
81.60.25.2	A+PTR	81.60.25.2.dyn.user.ono.com
81.60.25.125	A+PTR	81.60.25.125.dyn.user.ono.com
81.60.26.2	A+PTR	81.60.26.2.dyn.user.ono.com
81.60.27.14	A+PTR	81.60.27.14.dyn.user.ono.com
81.60.30.2	A	81.60.30.2.dyn.user.ono.com
81.60.30.150	A+PTR	81.60.30.150.dyn.user.ono.com
81.60.32.2	A	81.60.32.2.dyn.user.ono.com
81.60.32.99	PTR	81.60.32.99.dyn.user.ono.com
81.60.35.236	PTR	81.60.35.236.dyn.user.ono.com
81.60.37.85	A+PTR	81.60.37.85.dyn.user.ono.com
81.60.37.246	A	81.60.37.246.dyn.user.ono.com
81.60.38.2	A+PTR	81.60.38.2.dyn.user.ono.com
81.60.38.3	A+PTR	81.60.38.3.dyn.user.ono.com
81.60.38.7	A	81.60.38.7.dyn.user.ono.com
81.60.38.8	A	81.60.38.8.dyn.user.ono.com
81.60.38.64	A+PTR	81.60.38.64.dyn.user.ono.com
81.60.38.66	A+PTR	81.60.38.66.dyn.user.ono.com
81.60.38.68	A	81.60.38.68.dyn.user.ono.com
81.60.38.70	A	81.60.38.70.dyn.user.ono.com
81.60.38.133	A	81.60.38.133.dyn.user.ono.com
81.60.38.134	A	81.60.38.134.dyn.user.ono.com
81.60.38.136	A	81.60.38.136.dyn.user.ono.com
81.60.38.137	A	81.60.38.137.dyn.user.ono.com
81.60.38.195	A+PTR	81.60.38.195.dyn.user.ono.com
81.60.38.200	A	81.60.38.200.dyn.user.ono.com
81.60.38.212	A	81.60.38.212.dyn.user.ono.com
81.60.38.214	A	81.60.38.214.dyn.user.ono.com
81.60.39.2	A	81.60.39.2.dyn.user.ono.com
81.60.39.35	A	81.60.39.35.dyn.user.ono.com
81.60.39.86	A	81.60.39.86.dyn.user.ono.com
81.60.39.154	A	81.60.39.154.dyn.user.ono.com
81.60.39.183	A	81.60.39.183.dyn.user.ono.com
81.60.41.176	A	81.60.41.176.dyn.user.ono.com
81.60.41.178	A	81.60.41.178.dyn.user.ono.com
81.60.43.110	PTR	81.60.43.110.dyn.user.ono.com
81.60.44.5	A	81.60.44.5.dyn.user.ono.com
81.60.44.76	A+PTR	81.60.44.76.dyn.user.ono.com
81.60.44.230	PTR	81.60.44.230.dyn.user.ono.com
81.60.45.17	PTR	81.60.45.17.dyn.user.ono.com
81.60.45.76	A	laspuntas.myipcamera.com
81.60.47.255	A+PTR	81.60.47.255.dyn.user.ono.com