Robtex

Up: 216.211.190.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.211.191.0/25
Down right: 216.211.191.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.211.191.3	A+PTR	ns.montanasat.net
216.211.191.3	A	dns2.cyberport.net
216.211.191.3	A	ns2.aboutmontana.net
216.211.191.4	A+PTR	mdns1.montanasat.net
216.211.191.5	PTR	surge3-smtp3.montanasat.net
216.211.191.5	A	surge3.montanasat.net
216.211.191.9	A+PTR	block-216.211.191.9.montanasat.net
216.211.191.9	A	ns2.montanasat.net
216.211.191.40	PTR	surge1-mirror.montanasat.net
216.211.191.40	A	surge3.montanasat.net
216.211.191.42	A	surge3.montanasat.net
216.211.191.50	PTR	surge3-smtp1.montanasat.net
216.211.191.50	A	surge3.montanasat.net
216.211.191.51	A	surge3.montanasat.net
216.211.191.51	A	mail.acrossmontana.net
216.211.191.51	A	mail.montanasat.net
216.211.191.55	A	ns2.inetmt.com
216.211.191.60	A	mail.cyberport.net
216.211.191.60	A	smtp.cyberport.net
216.211.191.61	A	mail.montanasky.net
216.211.191.62	A	mail.montanasky.us
216.211.191.63	PTR	mail.lclink.com
216.211.191.63	A	surge3.montanasat.net
216.211.191.64	A	mail.usamontana.com
216.211.191.66	A	mail.montanasky.com
216.211.191.67	A	mail.aboutmontana.net
216.211.191.70	PTR	spameater.inetmt.net
216.211.191.70	A	spameater.inetmt.com
216.211.191.137	A+PTR	block-216.211.191.137.montanasat.net
216.211.191.149	A	mail.kvis.net
216.211.191.150	A+PTR	surge3.montanasat.net
216.211.191.150	A	mail.frederickweber.com
216.211.191.150	A	mail.installtech.net
216.211.191.196	A+PTR	block-216.211.191.196.montanasat.net
216.211.191.223	A+PTR	block-216.211.191.223.montanasat.net