Robtex

Up: 37.140.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 37.140.64.0/20
Down right: 37.140.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.140.64.0	PTR	pool-37-140-64-0.is74.ru
37.140.65.2	PTR	pool-37-140-65-2.is74.ru
37.140.69.99	PTR	pool-37-140-69-99.is74.ru
37.140.69.163	PTR	pool-37-140-69-163.is74.ru
37.140.71.66	PTR	pool-37-140-71-66.is74.ru
37.140.71.99	PTR	pool-37-140-71-99.is74.ru
37.140.72.63	A	hostland.ru.hentaifree.ru
37.140.72.63	A	*.ru.hentaifree.ru
37.140.72.63	A	ns.hostland.ru.hentaifree.ru
37.140.79.32	PTR	pool-37-140-79-32.is74.ru
37.140.80.35	PTR	pool-37-140-80-35.is74.ru
37.140.81.162	PTR	pool-37-140-81-162.is74.ru
37.140.82.0	PTR	pool-37-140-82-0.is74.ru
37.140.82.97	PTR	pool-37-140-82-97.is74.ru
37.140.82.212	A	truebit7.ru
37.140.83.81	A	mail.truebit7.ru
37.140.84.1	PTR	pool-37-140-84-1.is74.ru
37.140.84.2	PTR	pool-37-140-84-2.is74.ru
37.140.84.3	PTR	pool-37-140-84-3.is74.ru
37.140.84.32	PTR	pool-37-140-84-32.is74.ru
37.140.84.34	PTR	pool-37-140-84-34.is74.ru
37.140.84.96	PTR	pool-37-140-84-96.is74.ru
37.140.84.98	PTR	pool-37-140-84-98.is74.ru
37.140.84.99	PTR	pool-37-140-84-99.is74.ru
37.140.84.130	PTR	pool-37-140-84-130.is74.ru
37.140.84.224	PTR	pool-37-140-84-224.is74.ru
37.140.85.92	A	thulemind.com
37.140.85.99	PTR	pool-37-140-85-99.is74.ru
37.140.87.1	PTR	pool-37-140-87-1.is74.ru
37.140.92.250	A	xn--90af3bl3c.xn--p1ai
37.140.94.162	PTR	pool-37-140-94-162.is74.ru
37.140.95.34	PTR	pool-37-140-95-34.is74.ru