Robtex

Up: 213.135.66.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.135.67.0/25
Down right: 213.135.67.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.135.67.1	A+PTR	ns.tsr.ru
213.135.67.7	A+PTR	wheel.telecore.net.ru
213.135.67.7	A	inet.tsr.ru
213.135.67.7	A	telecore.net.ru
213.135.67.50	PTR	mail.svcore.net.ru
213.135.67.81	A	ims.vgf.ru
213.135.67.132	A+PTR	mail.acaeg.ru
213.135.67.228	PTR	electropoisk.ru
213.135.67.232	A	vzug-shop.ru
213.135.67.235	A+PTR	ms.telecom-service.ru
213.135.67.235	A	zafiltrami.ru
213.135.67.235	A	filtru-da.ru
213.135.67.240	PTR	tig-net.access.telecore.net.ru