Robtex

Up: 217.168.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 217.168.240.0/22
Down right: 217.168.244.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.168.240.6	PTR	r24i-1-nmts.ei.nnov.ru
217.168.240.10	A+PTR	r24i-nne.ei.nnov.ru
217.168.240.13	A	8824-24-g176a.ei.nnov.ru
217.168.240.30	A	at8012-gor151.ei.nnov.ru
217.168.240.86	PTR	ar410-icen.ei.nnov.ru
217.168.240.90	A	r24i-semenov.ei.nnov.ru
217.168.240.98	A	r24i-arz.ei.nnov.ru
217.168.240.139	PTR	pal.entelecom.ru
217.168.240.139	A+PTR	pal.ei.nnov.ru
217.168.240.140	A	jazz.entelecom.ru
217.168.240.144	PTR	mx.entelecom.ru
217.168.240.144	PTR	mx.ei.nnov.ru
217.168.240.144	A	entelekom.ru
217.168.241.130	A+PTR	mx1.entelecom.ru
217.168.241.130	PTR	sly.entelecom.ru
217.168.241.130	A+PTR	fox.ei.nnov.ru
217.168.241.198	A+PTR	mail.vels.nnov.ru
217.168.242.74	A	mail.all-nn.ru
217.168.244.98	A	web-lock.ru
217.168.244.129	A	mail2.vocbank.ru
217.168.244.163	A+PTR	mail.vsess.com
217.168.244.163	A	mx1.vsess.com
217.168.244.164	A+PTR	vmail.entelecom.ru
217.168.244.245	PTR	itari.ru
217.168.244.245	A	xn--h1aegvh0d.xn--p1ai
217.168.244.245	A	musnotes.com
217.168.245.2	PTR	217-168-245-2.servers-list.com
217.168.245.2	A	eniatl.com
217.168.245.5	PTR	217-168-245-5.servers-list.com
217.168.245.15	PTR	217-168-245-15.servers-list.com
217.168.245.15	A	rolafe.com
217.168.245.28	PTR	217-168-245-28.servers-list.com
217.168.245.28	A	rociplee.com
217.168.245.41	PTR	217-168-245-41.servers-list.com
217.168.245.41	A	nicuntel.com
217.168.245.63	PTR	217-168-245-63.servers-list.com
217.168.245.117	PTR	217-168-245-117.servers-list.com