Robtex

Up: 176.51.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 176.51.64.0/20
Down right: 176.51.80.0/20

IP	Type	Hostname
176.51.66.3	PTR	b-internet.176.51.66.3.nsk.rt.ru
176.51.66.33	PTR	b-internet.176.51.66.33.nsk.rt.ru
176.51.66.34	PTR	b-internet.176.51.66.34.nsk.rt.ru
176.51.66.35	PTR	b-internet.176.51.66.35.nsk.rt.ru
176.51.66.99	PTR	b-internet.176.51.66.99.nsk.rt.ru
176.51.66.129	PTR	b-internet.176.51.66.129.nsk.rt.ru
176.51.66.131	PTR	b-internet.176.51.66.131.nsk.rt.ru
176.51.66.162	PTR	b-internet.176.51.66.162.nsk.rt.ru
176.51.66.195	PTR	b-internet.176.51.66.195.nsk.rt.ru
176.51.67.6	A	subaru54.ru
176.51.67.8	PTR	b-internet.176.51.67.8.nsk.rt.ru
176.51.68.104	PTR	b-internet.176.51.68.104.nsk.rt.ru
176.51.68.207	PTR	b-internet.176.51.68.207.nsk.rt.ru
176.51.68.223	PTR	b-internet.176.51.68.223.nsk.rt.ru
176.51.69.34	PTR	b-internet.176.51.69.34.nsk.rt.ru
176.51.69.99	PTR	b-internet.176.51.69.99.nsk.rt.ru
176.51.69.162	PTR	b-internet.176.51.69.162.nsk.rt.ru
176.51.69.224	PTR	b-internet.176.51.69.224.nsk.rt.ru
176.51.70.151	PTR	b-internet.176.51.70.151.nsk.rt.ru
176.51.70.151	A	seed.bitcoin.sipa.be
176.51.70.199	PTR	b-internet.176.51.70.199.nsk.rt.ru
176.51.71.65	PTR	b-internet.176.51.71.65.nsk.rt.ru
176.51.72.2	PTR	b-internet.176.51.72.2.nsk.rt.ru
176.51.72.35	PTR	b-internet.176.51.72.35.nsk.rt.ru
176.51.72.96	PTR	b-internet.176.51.72.96.nsk.rt.ru
176.51.73.14	PTR	b-internet.176.51.73.14.nsk.rt.ru
176.51.73.17	PTR	b-internet.176.51.73.17.nsk.rt.ru
176.51.73.114	PTR	b-internet.176.51.73.114.nsk.rt.ru
176.51.73.207	PTR	b-internet.176.51.73.207.nsk.rt.ru
176.51.75.76	PTR	b-internet.176.51.75.76.nsk.rt.ru
176.51.75.113	PTR	b-internet.176.51.75.113.nsk.rt.ru
176.51.75.178	PTR	b-internet.176.51.75.178.nsk.rt.ru
176.51.75.200	PTR	b-internet.176.51.75.200.nsk.rt.ru
176.51.76.53	PTR	b-internet.176.51.76.53.nsk.rt.ru
176.51.77.0	PTR	b-internet.176.51.77.0.nsk.rt.ru
176.51.77.116	PTR	b-internet.176.51.77.116.nsk.rt.ru
176.51.77.124	PTR	b-internet.176.51.77.124.nsk.rt.ru
176.51.78.55	PTR	b-internet.176.51.78.55.nsk.rt.ru
176.51.78.119	PTR	b-internet.176.51.78.119.nsk.rt.ru
176.51.78.211	PTR	b-internet.176.51.78.211.nsk.rt.ru
176.51.79.52	PTR	b-internet.176.51.79.52.nsk.rt.ru
176.51.79.187	PTR	b-internet.176.51.79.187.nsk.rt.ru
176.51.79.202	PTR	b-internet.176.51.79.202.nsk.rt.ru
176.51.80.73	PTR	b-internet.176.51.80.73.nsk.rt.ru
176.51.80.186	PTR	b-internet.176.51.80.186.nsk.rt.ru
176.51.80.233	A	xn----7sbahikunwmqshg.xn--p1ai
176.51.83.37	PTR	b-internet.176.51.83.37.nsk.rt.ru
176.51.86.52	PTR	b-internet.176.51.86.52.nsk.rt.ru
176.51.87.62	PTR	b-internet.176.51.87.62.nsk.rt.ru
176.51.87.237	PTR	b-internet.176.51.87.237.nsk.rt.ru
176.51.88.107	PTR	b-internet.176.51.88.107.nsk.rt.ru
176.51.88.130	PTR	b-internet.176.51.88.130.nsk.rt.ru
176.51.88.152	PTR	b-internet.176.51.88.152.nsk.rt.ru
176.51.88.233	PTR	b-internet.176.51.88.233.nsk.rt.ru
176.51.88.240	PTR	b-internet.176.51.88.240.nsk.rt.ru
176.51.89.97	PTR	b-internet.176.51.89.97.nsk.rt.ru
176.51.90.2	PTR	b-internet.176.51.90.2.nsk.rt.ru
176.51.90.34	PTR	b-internet.176.51.90.34.nsk.rt.ru
176.51.90.131	PTR	b-internet.176.51.90.131.nsk.rt.ru
176.51.90.163	PTR	b-internet.176.51.90.163.nsk.rt.ru
176.51.90.192	PTR	b-internet.176.51.90.192.nsk.rt.ru
176.51.90.227	PTR	b-internet.176.51.90.227.nsk.rt.ru
176.51.91.81	PTR	b-internet.176.51.91.81.nsk.rt.ru
176.51.95.41	PTR	b-internet.176.51.95.41.nsk.rt.ru