Robtex

Up: 203.201.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.201.156.0/23
Down right: 203.201.158.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.201.156.4	PTR	bne-pri1-2.ecn.net.au
203.201.156.22	PTR	ctcex01.corporate.sbctc.com.au
203.201.156.22	A	corporate.sbctc.com.au
203.201.156.22	A	mail.sbctc.com.au
203.201.158.30	PTR	dial-203-201-158-30.ecn.net.au
203.201.158.42	PTR	dial-203-201-158-42.ecn.net.au
203.201.158.95	A+PTR	dial-203-201-158-95.ecn.net.au
203.201.158.191	A	dial-203-201-158-191.ecn.net.au
203.201.158.198	PTR	dial-203-201-158-198.ecn.net.au
203.201.158.198	A	backupmx.rwnf.com.au
203.201.159.6	PTR	dial-203-201-159-6.ecn.net.au
203.201.159.7	PTR	dial-203-201-159-7.ecn.net.au
203.201.159.20	A+PTR	dial-203-201-159-20.ecn.net.au
203.201.159.24	A+PTR	dial-203-201-159-24.ecn.net.au
203.201.159.40	A+PTR	dial-203-201-159-40.ecn.net.au
203.201.159.42	A+PTR	dial-203-201-159-42.ecn.net.au
203.201.159.43	A	dial-203-201-159-43.ecn.net.au
203.201.159.46	PTR	dial-203-201-159-46.ecn.net.au
203.201.159.67	A+PTR	dial-203-201-159-67.ecn.net.au
203.201.159.70	A+PTR	dial-203-201-159-70.ecn.net.au
203.201.159.76	PTR	dial-203-201-159-76.ecn.net.au
203.201.159.85	A+PTR	dial-203-201-159-85.ecn.net.au
203.201.159.90	PTR	dial-203-201-159-90.ecn.net.au
203.201.159.110	PTR	dial-203-201-159-110.ecn.net.au
203.201.159.156	PTR	dial-203-201-159-156.ecn.net.au
203.201.159.181	PTR	dial-203-201-159-181.ecn.net.au
203.201.159.200	PTR	dial-203-201-159-200.ecn.net.au
203.201.159.202	A+PTR	dial-203-201-159-202.ecn.net.au
203.201.159.206	A	dial-203-201-159-206.ecn.net.au
203.201.159.233	A	dial-203-201-159-233.ecn.net.au
203.201.159.234	PTR	dial-203-201-159-234.ecn.net.au
203.201.159.239	A+PTR	dial-203-201-159-239.ecn.net.au
203.201.159.249	PTR	dial-203-201-159-249.ecn.net.au