Robtex

Up: 91.207.140.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 91.207.142.0/24
Down right: 91.207.143.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.207.142.0	PTR	net-91-207-142.bigtelecom-ural.ru
91.207.142.5	PTR	host-91-207-142-5.bigtelecom-ural.ru
91.207.142.11	PTR	host-91-207-142-11.bigtelecom-ural.ru
91.207.142.13	PTR	host-91-207-142-13.bigtelecom-ural.ru
91.207.142.18	PTR	host-91-207-142-18.bigtelecom-ural.ru
91.207.142.19	PTR	host-91-207-142-19.bigtelecom-ural.ru
91.207.142.37	PTR	host-91-207-142-37.bigtelecom-ural.ru
91.207.142.38	PTR	host-91-207-142-38.bigtelecom-ural.ru
91.207.142.38	A	uraltelecom.ru
91.207.142.54	PTR	host-91-207-142-54.bigtelecom-ural.ru
91.207.142.61	PTR	host-91-207-142-61.bigtelecom-ural.ru
91.207.142.101	PTR	host-91-207-142-101.bigtelecom-ural.ru
91.207.142.110	PTR	host-91-207-142-110.bigtelecom-ural.ru
91.207.142.145	PTR	host-91-207-142-145.bigtelecom-ural.ru
91.207.142.157	PTR	host-91-207-142-157.bigtelecom-ural.ru
91.207.142.162	PTR	host-91-207-142-162.bigtelecom-ural.ru
91.207.142.171	PTR	host-91-207-142-171.bigtelecom-ural.ru
91.207.142.181	PTR	host-91-207-142-181.bigtelecom-ural.ru
91.207.142.183	PTR	host-91-207-142-183.bigtelecom-ural.ru
91.207.142.191	PTR	host-91-207-142-191.bigtelecom-ural.ru
91.207.142.203	PTR	host-91-207-142-203.bigtelecom-ural.ru
91.207.142.217	PTR	host-91-207-142-217.bigtelecom-ural.ru
91.207.142.227	PTR	host-91-207-142-227.bigtelecom-ural.ru
91.207.142.229	PTR	host-91-207-142-229.bigtelecom-ural.ru
91.207.142.239	PTR	host-91-207-142-239.bigtelecom-ural.ru
91.207.142.242	PTR	ns2.bigtelecom.ru
91.207.142.242	A	ns1.uraltelecom.ru
91.207.142.242	A	mail.uraltelecom.ru
91.207.143.4	A	bsd.gm-mebel.ru
91.207.143.10	PTR	garant.orgus.ru
91.207.143.38	PTR	host-91-207-143-38.bigtelecom-ural.ru
91.207.143.50	PTR	bsd.foodsrv.ru
91.207.143.50	A	foodsrv.ru
91.207.143.90	A	stomax-orsk.ru
91.207.143.126	PTR	host-91-207-143-126.bigtelecom-ural.ru
91.207.143.138	A	mail.stpserver.ru
91.207.143.138	A	orsk.mgate.ru
91.207.143.138	A	moy-orsk.ru
91.207.143.154	A+PTR	amulet-gate.amulet-secur.ru
91.207.143.154	A	amulet-secur.ru
91.207.143.154	A	zimbra-ubuntu.amulet-secur.ru