Robtex

Up: 46.0.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 46.0.196.0/23
Down right: 46.0.198.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
46.0.196.78	A	mail.mpsamis.ru
46.0.196.110	PTR	46x0x196x110.static-customer.samara.ertelecom.ru
46.0.196.220	PTR	46x0x196x220.static-customer.samara.ertelecom.ru
46.0.197.128	PTR	46x0x197x128.static-business.samara.ertelecom.ru
46.0.197.128	A	avrsoft.ru
46.0.198.200	A+PTR	tsk-samara.opt163.ru
46.0.199.1	PTR	46x0x199x1.static-customer.samara.ertelecom.ru
46.0.199.1	A	mfcr.ru
46.0.199.10	PTR	vh.minobr63.ru
46.0.199.10	A	waldorf-samara.ru
46.0.199.10	A	mail.shkola-114.ru
46.0.199.12	PTR	46x0x199x12.static-customer.samara.ertelecom.ru
46.0.199.28	A+PTR	mx1.samniva.com
46.0.199.57	A+PTR	mail.integrated-technology.ru
46.0.199.57	A	post.integral63.ru
46.0.199.60	PTR	mail.samara.edu.ru
46.0.199.60	A	ns2.samara.edu.ru
46.0.199.65	A+PTR	mail.elsystems.ru
46.0.199.65	A	ftp.elsystems.ru
46.0.199.80	A+PTR	mail.forsltd.ru
46.0.199.115	PTR	46x0x199x115.static-customer.samara.ertelecom.ru
46.0.199.181	PTR	sh.hostspectr.net
46.0.199.181	A	www.xn--80ahdril9at.xn--p1ai
46.0.199.181	A	mail.vigorroads.com
46.0.199.186	PTR	pgenom.com
46.0.199.186	A	www.pgenom.com
46.0.199.187	A	www.samara.edu.ru
46.0.199.188	A+PTR	sh.hostspectr.net
46.0.199.191	A	mail.samara.edu.ru
46.0.199.255	PTR	46x0x199x255.static-customer.samara.ertelecom.ru