Robtex

Up: 223.30.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 223.30.12.0/23
Down right: 223.30.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
223.30.12.116	A	mail.vishwakinc.com
223.30.12.117	A	mail.vishwak.us
223.30.12.123	A	mail.vishwaksolution.com
223.30.12.125	A	chnvishwak.com
223.30.12.125	A	mail.chnvishwak.com
223.30.13.2	A+PTR	mail2.vct.co.in
223.30.13.5	A+PTR	www.vct.co.in
223.30.13.5	A	vct.co.in
223.30.13.68	A	ns1.britainindiaconvention.com
223.30.13.69	PTR	tirupatihelpline.co.in
223.30.13.99	PTR	mail.sugunafoods.co.in
223.30.13.99	A	mail.bovianhealthcare.com
223.30.13.99	A	sbg.bovianhealthcare.com
223.30.13.102	A	mail.sugunaretail.in
223.30.13.102	A	sugunaretail.in
223.30.13.104	A	mail.sgitsys.com
223.30.13.107	A+PTR	sughbd.sugunapoultry.com
223.30.13.107	A	mail.sugunafoods.co.in
223.30.13.108	A	mail.suguna.co.in
223.30.13.108	A	suguna.co.in
223.30.13.109	A	sugunafoodsindia.com
223.30.13.146	PTR	segment-223-30.sify.net
223.30.13.150	PTR	segment-223-30.sify.net
223.30.13.174	PTR	segment-223-30.sify.net
223.30.14.73	A	3dsecure.payseal.com
223.30.15.53	A+PTR	mail1.thirumalaichemicals.com
223.30.15.53	A	dmssmail.thirumalaichemicals.com
223.30.15.97	PTR	segment-223-30.sify.net
223.30.15.97	A	mail.higgins.in
223.30.15.98	PTR	segment-223-30.sify.net
223.30.15.98	A	dixcyscott.biz
223.30.15.99	PTR	mail.dixcy.co.in