Robtex

Up: 220.240.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 220.240.240.0/23
Down right: 220.240.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.240.240.2	PTR	220-240-240-2.static.tpgi.com.au
220.240.240.6	PTR	220-240-240-6.static.tpgi.com.au
220.240.240.8	PTR	220-240-240-8.static.tpgi.com.au
220.240.240.45	PTR	220-240-240-45.static.tpgi.com.au
220.240.240.46	PTR	220-240-240-46.static.tpgi.com.au
220.240.240.82	PTR	220-240-240-82.static.tpgi.com.au
220.240.240.85	PTR	220-240-240-85.static.tpgi.com.au
220.240.240.91	PTR	220-240-240-91.tpgi.com.au
220.240.240.91	A	bryansplace.net
220.240.240.91	A	novix.com.au
220.240.240.94	PTR	220-240-240-94.static.tpgi.com.au
220.240.240.112	PTR	220-240-240-112.static.tpgi.com.au
220.240.240.123	PTR	220-240-240-123.static.tpgi.com.au
220.240.240.141	PTR	220-240-240-141.static.tpgi.com.au
220.240.240.156	PTR	220-240-240-156.static.tpgi.com.au
220.240.240.173	PTR	220-240-240-173.static.tpgi.com.au
220.240.240.174	PTR	220-240-240-174.static.tpgi.com.au
220.240.240.182	PTR	220-240-240-182.static.tpgi.com.au
220.240.240.208	PTR	220-240-240-208.static.tpgi.com.au
220.240.240.228	PTR	220-240-240-228.static.tpgi.com.au
220.240.240.232	PTR	220-240-240-232.static.tpgi.com.au
220.240.240.235	PTR	235.240.240.220.static.comindico.com.au
220.240.240.244	PTR	220-240-240-244.static.tpgi.com.au
220.240.240.246	PTR	220-240-240-246.static.tpgi.com.au
220.240.241.187	PTR	187.241.240.220.static.dsl.comindico.com.au
220.240.243.144	PTR	144.243.240.220.static.dsl.comindico.com.au