Robtex

Up: 1.244.114.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 1.244.115.0/25
Down right: 1.244.115.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
1.244.115.130	A+PTR	mail.em-tech.co.kr
1.244.115.151	PTR	spam.em-tech.co.kr
1.244.115.151	PTR	spam.lst4u.co.kr
1.244.115.157	A	sms.duzon.com
1.244.115.160	PTR	duzon.com
1.244.115.172	PTR	intranet.bill36524.com
1.244.115.172	A	bill36524.net
1.244.115.172	A	neoport.net
1.244.115.198	A+PTR	spam.bill36524.com
1.244.115.199	A+PTR	mg.duzon.com
1.244.115.199	A+PTR	mgw.duzon.com
1.244.115.200	A+PTR	mail.bill36524.com
1.244.115.201	PTR	mail.bill36524.com
1.244.115.202	PTR	mail.bill36524.com
1.244.115.203	PTR	mail.bill36524.com
1.244.115.204	PTR	mail.bill36524.com
1.244.115.205	PTR	mail.bill36524.com
1.244.115.208	A+PTR	attachtax.duzon.com
1.244.115.211	PTR	realadmin.bill36524.com
1.244.115.211	A+PTR	realtest.bill36524.com
1.244.115.211	A+PTR	realtestadmin.bill36524.com
1.244.115.212	PTR	econtract.bill36524.com
1.244.115.214	A	update.duzonerp.com