Robtex

Up: 211.115.217.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 211.115.217.128/26
Down right: 211.115.217.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.115.217.140	A+PTR	sendc.ozmailer.com
211.115.217.141	A+PTR	sendd.ozmailer.com
211.115.217.151	A+PTR	send151.ozmailer.com
211.115.217.151	A	mail.ej114.com
211.115.217.151	A	mail.bj04.com
211.115.217.158	PTR	send158.ozmailer.com
211.115.217.159	A	send159.ozmailer.com
211.115.217.190	PTR	ns2.kmain.com
211.115.217.198	PTR	mail.dearmall.biz
211.115.217.198	A	mail.yedrsolution.com
211.115.217.198	A	mail.dressy21.com
211.115.217.200	A+PTR	webns1.renoeve.com
211.115.217.200	A	mail.globaltns.com
211.115.217.200	A	mail.bosspack.com
211.115.217.201	A+PTR	webns2.renoeve.com
211.115.217.203	A	tigermail.co.kr
211.115.217.203	A	mail.webstage.co.kr
211.115.217.203	A	ns1.webstage.co.kr
211.115.217.204	PTR	ns1.kmain.com
211.115.217.206	A+PTR	send1.ozmailer.com
211.115.217.207	A+PTR	sende.ozmailer.com
211.115.217.208	A+PTR	send1.ozmailer.com
211.115.217.209	A+PTR	send1.ozmailer.com
211.115.217.215	A+PTR	sendb.ozmailer.com
211.115.217.219	A	tigermail.co.kr
211.115.217.220	A	mall-220.kmain.com
211.115.217.221	A+PTR	mall-221.kmain.com
211.115.217.230	A+PTR	vs.ozmailer.com
211.115.217.234	A+PTR	ns1.renoeve.com
211.115.217.235	PTR	www.ozmailer.com
211.115.217.235	A	mail.webstage.co.kr
211.115.217.236	A+PTR	mx.ozmailer.com
211.115.217.236	A	mx.webstage.co.kr
211.115.217.236	A	ns.ozmailer.com
211.115.217.237	A+PTR	senda.ozmailer.com
211.115.217.238	A+PTR	send1.ozmailer.com
211.115.217.239	A+PTR	send239.ozmailer.com
211.115.217.248	A+PTR	sendf.ozmailer.com
211.115.217.249	A+PTR	send1.ozmailer.com
211.115.217.250	A+PTR	send1.ozmailer.com
211.115.217.251	A+PTR	send1.ozmailer.com
211.115.217.253	PTR	send2.ozsurvey.co.kr
211.115.217.253	A	send1.ozmailer.com