Robtex

Up: 145.255.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 145.255.8.0/22
Down right: 145.255.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
145.255.8.41	PTR	145.255.8.41.dynamic.ufanet.ru
145.255.8.104	PTR	145.255.8.104.dynamic.ufanet.ru
145.255.8.148	PTR	145.255.8.148.dynamic.ufanet.ru
145.255.8.213	PTR	145.255.8.213.dynamic.ufanet.ru
145.255.9.227	PTR	145.255.9.227.dynamic.ufanet.ru
145.255.10.81	PTR	145.255.10.81.dynamic.ufanet.ru
145.255.10.158	PTR	145.255.10.158.dynamic.ufanet.ru
145.255.10.178	PTR	145.255.10.178.dynamic.ufanet.ru
145.255.10.182	PTR	145.255.10.182.dynamic.ufanet.ru
145.255.10.204	PTR	145.255.10.204.dynamic.ufanet.ru
145.255.10.208	PTR	145.255.10.208.dynamic.ufanet.ru
145.255.11.46	PTR	145.255.11.46.dynamic.ufanet.ru
145.255.11.199	PTR	145.255.11.199.dynamic.ufanet.ru
145.255.12.7	PTR	145.255.12.7.dynamic.slv.ufanet.ru
145.255.13.223	A	salinc.ru
145.255.14.12	PTR	145.255.14.12.dynamic.ufanet.ru
145.255.14.12	A	r1---sn-045oxu-045e.googlevideo.com
145.255.14.12	A	r1.sn-045oxu-045e.googlevideo.com
145.255.14.13	PTR	145.255.14.13.dynamic.ufanet.ru
145.255.14.13	A	r2---sn-045oxu-045e.googlevideo.com
145.255.14.14	PTR	145.255.14.14.dynamic.ufanet.ru
145.255.14.14	A	r3---sn-045oxu-045e.googlevideo.com
145.255.14.15	PTR	145.255.14.15.dynamic.ufanet.ru
145.255.14.16	PTR	145.255.14.16.dynamic.ufanet.ru
145.255.14.16	A	r5.sn-045oxu-045e.googlevideo.com
145.255.14.16	A	r5---sn-045oxu-045e.googlevideo.com
145.255.14.17	PTR	145.255.14.17.dynamic.ufanet.ru
145.255.14.17	A	r6---sn-045oxu-045e.googlevideo.com
145.255.14.18	PTR	145.255.14.18.dynamic.ufanet.ru
145.255.14.18	A	r7---sn-045oxu-045e.googlevideo.com
145.255.14.19	PTR	145.255.14.19.dynamic.ufanet.ru
145.255.14.29	PTR	145.255.14.29.dynamic.ufanet.ru
145.255.14.76	PTR	cache.google.com
145.255.14.76	A	r1.sn-045oxu-045l.googlevideo.com
145.255.14.76	A	r1---sn-045oxu-045l.googlevideo.com
145.255.14.77	PTR	cache.google.com
145.255.14.77	A	r2---sn-045oxu-045l.googlevideo.com
145.255.14.77	A	r2.sn-045oxu-045l.googlevideo.com
145.255.14.78	PTR	cache.google.com
145.255.14.79	PTR	cache.google.com
145.255.14.80	PTR	cache.google.com
145.255.14.81	PTR	cache.google.com
145.255.14.81	A	r6.sn-045oxu-045l.googlevideo.com
145.255.14.81	A	r6---sn-045oxu-045l.googlevideo.com
145.255.14.82	PTR	cache.google.com
145.255.14.83	PTR	cache.google.com
145.255.14.140	PTR	145.255.14.140.dynamic.ufanet.ru
145.255.14.140	A	r1---sn-045oxu-045s.googlevideo.com
145.255.14.141	PTR	145.255.14.141.dynamic.ufanet.ru
145.255.14.141	A	r2.sn-045oxu-045s.gvt1.com
145.255.14.141	A	r2.sn-045oxu-045s.googlevideo.com
145.255.14.142	PTR	145.255.14.142.dynamic.ufanet.ru
145.255.14.172	PTR	145.255.14.172.dynamic.ufanet.ru
145.255.14.172	A	r1---sn-045oxu-045z.googlevideo.com
145.255.14.172	A	r1.sn-045oxu-045z.googlevideo.com
145.255.14.173	PTR	145.255.14.173.dynamic.ufanet.ru
145.255.14.173	A	r2---sn-045oxu-045z.googlevideo.com
145.255.14.174	PTR	145.255.14.174.dynamic.ufanet.ru
145.255.14.174	A	r3---sn-045oxu-045z.googlevideo.com
145.255.14.204	PTR	145.255.14.204.dynamic.ufanet.ru
145.255.14.204	A	r1.sn-045oxu-0456.gvt1.com
145.255.14.204	A	r1.sn-045oxu-0456.googlevideo.com
145.255.14.205	PTR	145.255.14.205.dynamic.ufanet.ru
145.255.14.205	A	r2.sn-045oxu-0456.gvt1.com
145.255.14.205	A	r2.sn-045oxu-0456.googlevideo.com
145.255.14.206	PTR	145.255.14.206.dynamic.ufanet.ru