Robtex

Up: 142.166.254.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 142.166.255.0/25
Down right: 142.166.255.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
142.166.255.34	PTR	emms.dplwireless.com
142.166.255.107	A+PTR	mx1.cookeaqua.com
142.166.255.107	A	mail.coldoceansalmon.com
142.166.255.107	A	mail.oceansalmonfarms.com
142.166.255.110	A+PTR	webmail.cookeaqua.com