Robtex

Up: 89.251.96.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 89.251.96.0/21
Down right: 89.251.104.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.251.96.0	PTR	host-89-251-96-0.bb-nsk.sib.mts.ru
89.251.96.1	A	host89-251-96-1.nsib.net
89.251.96.26	A	nsk.esys.ru
89.251.96.62	A	host89-251-96-62.nsib.net
89.251.96.66	PTR	host-89-251-96-66.bb-nsk.sib.mts.ru
89.251.96.66	A	ns101.nsk.ru
89.251.96.66	A	ns102.nsk.ru
89.251.96.67	A	stend.proffis.ru
89.251.96.69	A	soccer-in-the-city.com
89.251.96.130	A+PTR	host89-251-96-130.nsib.net
89.251.96.195	A+PTR	host89-251-96-195.nsib.net
89.251.96.195	A	admin.itfs.nsk.su
89.251.97.90	A	gw1.sibers.com
89.251.97.165	A	host89-251-97-165.nsib.net
89.251.98.2	A+PTR	ns.promix.ru
89.251.98.2	A	mail.promix.ru
89.251.98.3	A	pipl.promix.ru
89.251.98.4	PTR	www.promix.ru
89.251.98.4	A	pro-rt.promix.ru
89.251.98.89	PTR	host-89-251-98-89.bb-nsk.sib.mts.ru
89.251.98.154	PTR	mx.uniscan.biz
89.251.98.249	PTR	host-89-251-98-249.bb-nsk.sib.mts.ru
89.251.99.18	PTR	host89-251-99-18.nsib.net
89.251.99.126	A	host89-251-99-126.nsib.net
89.251.100.0	PTR	host-89-251-100-0.bb-nsk.sib.mts.ru
89.251.100.0	A	host89-251-100-0.nsib.net
89.251.100.46	PTR	mx1.119.ru
89.251.100.46	A	ns.technocity.ru
89.251.100.46	A	ns2.technocity.ru
89.251.100.50	A	xn--c1aucnj.xn--p1ai
89.251.100.86	PTR	host89-251-100-86.nsib.net
89.251.100.86	A	mail.flexocenter.ru
89.251.100.86	A	mx.flex-s.ru
89.251.100.142	A	tsnsib.nsk.ru
89.251.100.142	A	mx.tsnsib.nsk.ru
89.251.100.250	A+PTR	host89-251-100-250.nsib.net
89.251.100.255	A	host89-251-100-255.nsib.net
89.251.101.0	A+PTR	host89-251-101-0.nsib.net
89.251.101.2	PTR	ludidela.ru
89.251.101.2	PTR	prosys.ru
89.251.101.36	A	host89-251-101-36.nsib.net
89.251.101.36	A	mx1.ixtens.com
89.251.101.62	A	host89-251-101-62.nsib.net
89.251.101.224	A	host89-251-101-224.nsib.net
89.251.101.225	A	host89-251-101-225.nsib.net
89.251.101.234	A	host89-251-101-234.nsib.net
89.251.101.238	A	host89-251-101-238.nsib.net
89.251.101.250	A	*.35.97.html.tszh-dom.ru
89.251.101.250	A	autoindustry536.blog.tszh-dom.ru
89.251.101.250	A	sibmetals.ru
89.251.102.0	A	host89-251-102-0.nsib.net
89.251.102.25	PTR	host-89-251-102-25.bb-nsk.sib.mts.ru
89.251.102.141	PTR	mx.nalog.ru.com
89.251.103.73	PTR	needet.ru
89.251.103.130	PTR	host-89-251-103-130.bb-nsk.sib.mts.ru
89.251.104.6	A	host89-251-104-6.nsib.net
89.251.104.78	A	host89-251-104-78.nsib.net
89.251.104.86	PTR	host-89-251-104-86.bb-nsk.sib.mts.ru
89.251.104.98	PTR	host-89-251-104-98.bb-nsk.sib.mts.ru
89.251.104.98	A	sibusadba.ru
89.251.104.206	A	mail.arta.nsk.ru
89.251.104.242	A+PTR	mx-nsk.megasignal.com
89.251.104.242	A	www.megasignal.ru
89.251.105.0	PTR	0-105-251-89.citynsk.ru
89.251.105.18	PTR	host-89-251-105-18.bb-nsk.sib.mts.ru
89.251.105.44	PTR	host-89-251-105-44.bb-nsk.sib.mts.ru
89.251.105.58	A+PTR	mail.neuronsk.ru
89.251.106.0	PTR	host-89-251-106-0.bb-nsk.sib.mts.ru
89.251.106.90	A+PTR	mail54.fssprus.ru
89.251.106.254	PTR	mawisoft.ru
89.251.106.254	A	ns.mawisoft.com
89.251.106.254	A	*.mawisoft.com
89.251.107.0	PTR	0-107-251-89.citynsk.ru
89.251.107.19	PTR	19-107-251-89.citynsk.ru
89.251.107.48	PTR	48-107-251-89.citynsk.ru
89.251.107.242	A	dok-enisey.com
89.251.108.0	PTR	0-108-251-89.citynsk.ru
89.251.108.210	PTR	host-89-251-108-210.bb-nsk.sib.mts.ru
89.251.108.222	PTR	host-89-251-108-222.bb-nsk.sib.mts.ru
89.251.108.222	A	games4teen.com
89.251.109.142	PTR	host-89-251-109-142.bb-nsk.sib.mts.ru