Robtex

Up: 203.119.104.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.119.104.0/23
Down right: 203.119.106.0/23

IP	Type	Hostname
203.119.104.0	PTR	network.infrastructure.apnic.net
203.119.104.1	A	nxgw1.apnic.net
203.119.104.10	A	aogw2.apnic.net
203.119.106.22	A	myapnic2.apnic.net
203.119.106.23	A+PTR	clove.apnic.net
203.119.106.25	A+PTR	nx-mailgw.apnic.net
203.119.106.25	A	so-mailgw.apnic.net
203.119.106.25	A	mail-gw3.apnic.net
203.119.106.26	A	rosemary.apnic.net
203.119.107.99	A+PTR	nx-ucs1.apnic.net
203.119.107.100	A+PTR	nx-cm1.apnic.net
203.119.107.101	A	nx-ucn1.apnic.net