Robtex

Up: 92.255.240.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 92.255.241.0/25
Down right: 92.255.241.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
92.255.241.0	PTR	net241.255.92-0.holding.ertelecom.ru
92.255.241.1	PTR	ertelecom.ru
92.255.241.1	A	ufa.domru.ru
92.255.241.1	A	barnaul.ertelecom.ru
92.255.241.2	PTR	net241.255.92-2.holding.ertelecom.ru
92.255.241.3	PTR	net241.255.92-3.holding.ertelecom.ru
92.255.241.4	PTR	net241.255.92-4.holding.ertelecom.ru
92.255.241.4	A	info.ertelecom.ru
92.255.241.5	A+PTR	erpost.ru
92.255.241.6	PTR	net241.255.92-6.holding.ertelecom.ru
92.255.241.6	A	mail.citydom.ru
92.255.241.7	PTR	net241.255.92-7.holding.ertelecom.ru
92.255.241.8	PTR	net241.255.92-8.holding.ertelecom.ru
92.255.241.9	PTR	net241.255.92-9.holding.ertelecom.ru
92.255.241.9	A	wizard.ertelecom.ru
92.255.241.10	PTR	net241.255.92-10.holding.ertelecom.ru
92.255.241.10	A	lk.domru.ru
92.255.241.11	PTR	net241.255.92-11.holding.ertelecom.ru
92.255.241.12	PTR	net241.255.92-12.holding.ertelecom.ru
92.255.241.13	PTR	net241.255.92-13.holding.ertelecom.ru
92.255.241.14	PTR	cab-tel.domru.ru
92.255.241.15	A+PTR	console.ertelecom.ru
92.255.241.16	A+PTR	openstb.domru.ru
92.255.241.17	PTR	net241.255.92-17.holding.ertelecom.ru
92.255.241.18	PTR	net241.255.92-18.holding.ertelecom.ru
92.255.241.19	PTR	net241.255.92-19.holding.ertelecom.ru
92.255.241.20	PTR	net241.255.92-20.holding.ertelecom.ru
92.255.241.100	A+PTR	law.filter.ertelecom.ru
92.255.241.129	PTR	net241.255.92-129.holding.ertelecom.ru
92.255.241.160	PTR	net241.255.92-160.holding.ertelecom.ru
92.255.241.255	PTR	net241.255.92-255.holding.ertelecom.ru