Robtex

Up: 217.14.22.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.14.22.0/25
Down right: 217.14.22.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.14.22.16	A+PTR	mx.telsycom.com
217.14.22.16	A	mx.telsycom.net
217.14.22.16	A	mx.telsycom.ru
217.14.22.21	A+PTR	ns1.telsycom.net
217.14.22.22	A+PTR	ns2.telsycom.net
217.14.22.31	PTR	esx1.telsycom.local
217.14.22.113	A+PTR	h.telsycom.ru