Robtex

Up: 91.189.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.189.164.0/23
Down right: 91.189.166.0/23

IP	Type	Hostname
91.189.164.1	A+PTR	ns.nsplus.ru
91.189.164.14	PTR	host-91-189-164-14.nsplus.ru
91.189.164.74	PTR	host-91-189-164-74.nsplus.ru
91.189.164.108	PTR	host-91-189-164-108.nsplus.ru
91.189.164.171	PTR	host-91-189-164-171.nsplus.ru
91.189.164.172	PTR	host-91-189-164-172.nsplus.ru
91.189.164.179	PTR	host-91-189-164-179.nsplus.ru
91.189.164.199	PTR	host-91-189-164-199.nsplus.ru
91.189.164.217	PTR	host-91-189-164-217.nsplus.ru
91.189.164.226	PTR	host-91-189-164-226.nsplus.ru
91.189.164.235	PTR	host-91-189-164-235.nsplus.ru
91.189.164.252	PTR	host-91-189-164-252.nsplus.ru
91.189.165.6	PTR	host-91-189-165-6.nsplus.ru
91.189.165.6	A	ns1.1-st.ru
91.189.165.6	A	mail1.1-st.ru
91.189.165.9	PTR	mail.auto.bratsk.ru
91.189.165.25	PTR	host-91-189-165-25.nsplus.ru
91.189.165.40	PTR	host-91-189-165-40.nsplus.ru
91.189.165.45	PTR	consultantbratsk.ru.ru
91.189.165.45	A	mail.consultantbratsk.ru
91.189.165.47	PTR	1-st.ru
91.189.165.53	PTR	host-91-189-165-53.nsplus.ru
91.189.165.65	A+PTR	mebel.bratsk.org
91.189.165.72	A	smtp.firstterminal.com
91.189.165.72	A	pop3.firstterminal.com
91.189.165.109	PTR	host-91-189-165-109.nsplus.ru
91.189.165.109	A	tstream.ru
91.189.165.149	PTR	host-91-189-165-149.nsplus.ru
91.189.165.206	A+PTR	compclub.ru
91.189.165.208	A+PTR	1-st.ru
91.189.165.208	A	mail.1-st.ru
91.189.165.208	A	ns.1-st.ru
91.189.165.211	PTR	mail.souz-bratsk.ru
91.189.165.211	A	souz-bratsk.ru
91.189.165.220	A	zeos.rga.ru
91.189.166.33	PTR	host-91-189-166-33.nsplus.ru
91.189.166.34	PTR	host-91-189-166-34.nsplus.ru
91.189.166.54	PTR	host-91-189-166-54.nsplus.ru
91.189.166.91	PTR	host-91-189-166-91.nsplus.ru
91.189.166.101	PTR	host-91-189-166-101.nsplus.ru
91.189.166.103	PTR	host-91-189-166-103.nsplus.ru
91.189.166.112	PTR	host-91-189-166-112.nsplus.ru
91.189.166.148	PTR	host-91-189-166-148.nsplus.ru
91.189.166.171	PTR	host-91-189-166-171.nsplus.ru
91.189.166.233	PTR	host-91-189-166-233.nsplus.ru
91.189.166.242	PTR	host-91-189-166-242.nsplus.ru
91.189.167.4	PTR	host-91-189-167-4.nsplus.ru
91.189.167.26	PTR	host-91-189-167-26.nsplus.ru
91.189.167.119	PTR	host-91-189-167-119.nsplus.ru
91.189.167.170	PTR	host-91-189-167-170.nsplus.ru
91.189.167.213	PTR	host-91-189-167-213.nsplus.ru