Robtex

Up: 203.17.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.17.32.0/23
Down right: 203.17.34.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.17.32.71	A	wbrt.org.nz
203.17.34.1	A+PTR	test-rev.firstdata.com.au
203.17.34.42	PTR	fdra-smtp.atmaccess.com.au
203.17.34.42	PTR	fdra-smtp.firstdata.com.au
203.17.34.42	A+PTR	mail2.firstdata.com.au
203.17.34.46	A+PTR	messageway-cert-nr-nat.anzsa.fdi.1dc.com
203.17.34.50	A	evibs.firstdata.com.au
203.17.34.51	A+PTR	vip-ext-insight2-nr.anzsa.fdi.1dc.com
203.17.34.51	PTR	insight2firstdata.com
203.17.34.51	A+PTR	www.insight2firstdata.com