Robtex

Up: 31.28.22.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 31.28.23.0/25
Down right: 31.28.23.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.28.23.8	A	mail.fcmt.ru
31.28.23.22	A	mail.quantumart.ru
31.28.23.24	A	reports.qsupport.ru
31.28.23.24	A	arr.dev.qsupport.ru
31.28.23.24	A	meatburg.ru
31.28.23.38	A+PTR	mail.painthouse.ru
31.28.23.38	A	mail.domkraski.ru
31.28.23.38	A	painthouse.ru
31.28.23.41	PTR	zayn.pro
31.28.23.41	PTR	mail.altaisstar.ru
31.28.23.41	A+PTR	mail.zayn.pro
31.28.23.43	A+PTR	srvconnector2.icmc.ru
31.28.23.79	A	www.niisp.ru
31.28.23.81	A	otrs.fcisp.ru
31.28.23.83	A+PTR	ex.fcisp.ru
31.28.23.83	A	fcisp.ru
31.28.23.83	A	www.portalkso.ru
31.28.23.87	A	fcisp.ru
31.28.23.143	PTR	adm.rusresurs.ru.23.28.31.in-addr.arpa
31.28.23.143	A	mail4.rusresurs.ru
31.28.23.143	A	mail3.rusresurs.ru
31.28.23.211	A+PTR	mx4.tm-consulting.ru
31.28.23.211	A	mx4.travel-technology.biz
31.28.23.212	A+PTR	mx4.itlux.ru
31.28.23.228	A+PTR	mail.klepa.ru
31.28.23.228	A	www.klepa.org
31.28.23.228	A	klepa.org
31.28.23.229	A	mx.klepa.ru
31.28.23.229	A	*.klepa.ru
31.28.23.234	A	mx4.tmc-mice.ru
31.28.23.235	A	mx4.tmc-agent.ru
31.28.23.236	A+PTR	exchange.pena.ru
31.28.23.236	PTR	mail.pena.ru
31.28.23.236	A	exchange.tdtria.ru
31.28.23.245	A	ns2.klepa.ru
31.28.23.249	A	mail.cp-lab.ru
31.28.23.249	A	mail.cpkino.ru
31.28.23.249	A	cpkino.ru