Robtex

Up: 203.22.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.22.101.0/25
Down right: 203.22.101.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.22.101.1	A	mail2.apic.net
203.22.101.1	A	ns1.apic.net
203.22.101.1	A	jefferson.sydneywerks.com.au
203.22.101.2	A	ns2.apic.net
203.22.101.2	A	churchill.sydneywerks.com.au
203.22.101.2	A	mail.callanpark.com