Robtex

Up: 103.230.180.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 103.230.180.0/25
Down right: 103.230.180.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.230.180.9	A+PTR	dns1.spark.com.bd
103.230.180.9	A	dns1.sparkbd.net
103.230.180.9	A	dns1.sparkbd.com
103.230.180.10	A+PTR	dns2.spark.com.bd
103.230.180.10	A	dns2.sparkbd.net
103.230.180.10	A	dns2.sparkbd.com
103.230.180.11	A+PTR	ns1.spark.net.bd
103.230.180.11	A	ns2.spark.net.bd
103.230.180.11	A	mail.spark.net.bd
103.230.180.15	PTR	mail.sparkbd.com
103.230.180.15	PTR	cloud.spark.com.bd
103.230.180.15	PTR	pop.spark.com.bd
103.230.180.16	A+PTR	smtp.spark.com.bd
103.230.180.16	A	mx.bodicegroup.com
103.230.180.16	A	backupmx.integra-apparel.com
103.230.180.20	PTR	mailgw.antispamcloudmail.net
103.230.180.20	A	mail.poscommerz.com
103.230.180.20	A	hotelaerolink.com
103.230.180.25	PTR	mailgw.spark.com.bd
103.230.180.25	A	pop.integra-apparel.com
103.230.180.25	A	mx.dndsourcing.net
103.230.180.30	PTR	erp.technocount.com
103.230.180.30	A	mail.hrexa.com
103.230.180.30	A	melodyandco.com