Robtex

Up: 178.49.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 178.49.12.0/23
Down right: 178.49.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.49.12.0	A+PTR	l49-12-0.cn.ru
178.49.12.36	PTR	l49-12-36.cn.ru
178.49.12.64	A+PTR	l49-12-64.cn.ru
178.49.12.68	PTR	nsk-garant.ru
178.49.12.70	PTR	nsk-garant.ru
178.49.12.75	PTR	vmx.mednsk.ru
178.49.12.75	A	ns-se.mednsk.ru
178.49.12.76	PTR	opera-novosibirsk.ru
178.49.12.88	PTR	mail.softomate.net
178.49.12.108	A	2222115.ru
178.49.12.112	A+PTR	l49-12-112.cn.ru
178.49.12.127	A	l49-12-127.cn.ru
178.49.12.137	A	l49-12-137.cn.ru
178.49.12.142	PTR	nsk-2d.bcs.ru
178.49.12.153	A+PTR	l49-12-153.cn.ru
178.49.12.153	A	gothica.ru
178.49.12.157	PTR	nevansk.ru
178.49.12.201	A	l49-12-201.cn.ru
178.49.12.207	PTR	phil-nsk.ru
178.49.12.218	A	l49-12-218.cn.ru
178.49.12.221	PTR	l49-12-221.cn.ru
178.49.12.221	A	ns2.efrosinia.ru
178.49.12.255	A+PTR	l49-12-255.cn.ru
178.49.13.0	A+PTR	l49-13-0.cn.ru
178.49.13.1	A	l49-13-1.cn.ru
178.49.13.2	PTR	mail.nsuem.ru
178.49.13.3	A	l49-13-3.cn.ru
178.49.13.5	A	l49-13-5.cn.ru
178.49.13.16	A+PTR	l49-13-16.cn.ru
178.49.13.22	A	l49-13-22.cn.ru
178.49.13.28	A	l49-13-28.cn.ru
178.49.13.37	A+PTR	l49-13-37.cn.ru
178.49.13.63	A	l49-13-63.cn.ru
178.49.13.68	A+PTR	han.cn.ru
178.49.13.71	A	l49-13-71.cn.ru
178.49.13.73	A	l49-13-73.cn.ru
178.49.13.77	PTR	rtrade.ru
178.49.13.91	PTR	mx.ratek.info
178.49.13.91	PTR	mx.ratek.kz
178.49.13.91	PTR	mx.ratek.su
178.49.13.94	A	l49-13-94.cn.ru
178.49.13.111	A+PTR	l49-13-111.cn.ru
178.49.13.113	A	l49-13-113.cn.ru
178.49.13.118	PTR	l49-13-118.novotelecom.ru
178.49.13.118	A	l49-13-118.cn.ru
178.49.13.147	A	l49-13-147.cn.ru
178.49.13.154	PTR	mail.mtk-nsk.ru
178.49.13.171	PTR	sabra.ru
178.49.13.173	PTR	mx.meteo-nso.ru
178.49.13.182	A	l49-13-182.cn.ru
178.49.13.195	A	l49-13-195.cn.ru
178.49.13.219	A+PTR	l49-13-219.cn.ru
178.49.13.219	A	diagnost-sib.ru
178.49.13.230	A+PTR	l49-13-230.cn.ru
178.49.13.238	PTR	opentech.ru
178.49.13.244	PTR	l49-13-244.cn.ru
178.49.13.244	A	ns2.ideaidealy.ru
178.49.13.244	A	ns2.narhoz.ru
178.49.13.255	A	l49-13-255.cn.ru
178.49.14.26	A	l49-14-26.cn.ru
178.49.14.31	A	l49-14-31.cn.ru
178.49.14.68	A	l49-14-68.cn.ru
178.49.14.68	A	s-davinci.ru
178.49.14.138	A	l49-14-138.cn.ru
178.49.14.166	A	l49-14-166.cn.ru
178.49.14.198	A	l49-14-198.cn.ru
178.49.15.6	A+PTR	l49-15-6.cn.ru
178.49.15.23	A	a001aa.ru
178.49.15.69	A	l49-15-69.cn.ru
178.49.15.70	A	l49-15-70.cn.ru
178.49.15.105	A	l49-15-105.cn.ru
178.49.15.120	A	l49-15-120.cn.ru
178.49.15.130	A+PTR	l49-15-130.cn.ru
178.49.15.158	A+PTR	l49-15-158.cn.ru
178.49.15.159	A	l49-15-159.cn.ru
178.49.15.160	A	l49-15-160.cn.ru
178.49.15.169	A	l49-15-169.cn.ru
178.49.15.204	A	l49-15-204.cn.ru
178.49.15.231	A	l49-15-231.cn.ru