Robtex

Up: 207.166.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 207.166.0.0/25
Down right: 207.166.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
207.166.0.10	PTR	luisa.mjusd.k12.ca.us
207.166.0.10	A	intergate.mjusd.k12.ca.us
207.166.0.10	A	luisa.mjusd.net
207.166.0.25	A+PTR	exchange-88lgwq.mjusd.com
207.166.0.25	PTR	mail.mjusd.k12.ca.us
207.166.0.25	A	mail.mjusd.com
207.166.0.39	A+PTR	email-filter.mjusd.com
207.166.0.40	A	es4000.mjusd.com
207.166.0.110	A	dns2.mjusd.org
207.166.0.110	A	dns2.mjusd.com
207.166.0.110	A	dns2.mjusd.net