Robtex

Up: 223.30.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 223.30.136.0/22
Down right: 223.30.140.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
223.30.137.213	A	techmail.aforetech.net
223.30.137.213	A	amail.aforetech.net
223.30.138.51	PTR	mail.wavegroup.in
223.30.138.51	A	mail.wavemalls.com
223.30.138.52	PTR	mail.wavegroup.in
223.30.138.52	A	mail.wavemalls.com
223.30.138.52	A	mail.wavecorp.in
223.30.138.53	PTR	mail.wavegroup.in
223.30.138.75	A	learnprof.com
223.30.141.69	PTR	segment-223-30.sify.net
223.30.141.90	A+PTR	mx.brbnmpl.co.in
223.30.142.106	A	marypawnshop.com
223.30.142.106	A	seahorseapparel.com
223.30.142.194	A	email2.maplesimaging.com
223.30.142.227	A	mail.gmmcoindia.co.in
223.30.143.98	PTR	segment-223-30.sify.net
223.30.143.99	A	mail.ajubanet.net