Robtex

Up: 123.243.34.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.34.0/25
Down right: 123.243.34.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.34.15	PTR	123-243-34-15.static.tpgi.com.au
123.243.34.17	A+PTR	123-243-34-17.static.tpgi.com.au
123.243.34.35	A+PTR	swissoft.com
123.243.34.35	A	swissoft.swissoft.com
123.243.34.67	A	123-243-34-67.tpgi.com.au
123.243.34.76	PTR	123-243-34-76.static.tpgi.com.au
123.243.34.76	A	mail.bl.org.nz
123.243.34.76	A	mail.bl.org.au
123.243.34.159	A	123-243-34-159.tpgi.com.au
123.243.34.200	A+PTR	123-243-34-200.static.tpgi.com.au
123.243.34.200	A	123-243-34-200.tpgi.com.au
123.243.34.219	A	123-243-34-219.static.tpgi.com.au
123.243.34.222	PTR	123-243-34-222.static.tpgi.com.au
123.243.34.222	A	ausgpl.com
123.243.34.222	A	mail.henrylawsonfc.com
123.243.34.245	A+PTR	123-243-34-245.static.tpgi.com.au