Robtex

Up: 203.128.232.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.128.232.0/23
Down right: 203.128.234.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.128.232.0	PTR	203-128-232-0.static.hostus.net.au
203.128.232.35	PTR	203-128-232-35.static.hostus.net.au
203.128.232.35	A	portmallmarket.com.au
203.128.232.240	PTR	203-128-232-240.yourdc.com.au
203.128.232.240	A	mx1.h2.net.au
203.128.232.240	A	mx1.hostus.net.au
203.128.232.242	A+PTR	mx2.hostus.net.au
203.128.232.242	A	mx.hostus.net.au
203.128.233.6	PTR	203-128-233-6.yourdc.com.au
203.128.233.6	A	astecservices.com.au
203.128.233.6	A	lawyersaw.com.au
203.128.233.11	A	ns1.hostus.com.au
203.128.233.11	A	203-128-233-11.static.hostus.net.au
203.128.233.56	PTR	msplesk01.h2.net.au
203.128.233.56	A	prismdefence.com
203.128.233.56	A	affiliated.com.au
203.128.233.162	PTR	vranger01.hostus.net.au
203.128.233.162	PTR	203-128-233-162.static.hostus.net.au
203.128.233.222	PTR	exhub01.hostus.net.au
203.128.234.60	A	foundationshine.org.au
203.128.235.29	A	sunrisecoaching.com.au
203.128.235.35	A	io-merino.com.au
203.128.235.35	A	docstore.net.au
203.128.235.69	A	foodsample.com.au
203.128.235.69	A	lovepurefood.com
203.128.235.240	A+PTR	mx3.hostus.net.au
203.128.235.240	A	mx.hostus.net.au
203.128.235.240	A	mx3.h2.net.au
203.128.235.242	A	mx.hostus.net.au
203.128.235.255	PTR	203-128-235-255.static.hostus.net.au