Robtex

Up: 220.227.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 220.227.140.0/23
Down right: 220.227.142.0/23

IP	Type	Hostname
220.227.141.91	PTR	www.kiet.edu
220.227.141.92	PTR	mail.kiet.edu
220.227.142.11	A	mx.imailgrid.com
220.227.142.12	A+PTR	imailgrid.com
220.227.142.13	A+PTR	imailgrid.com
220.227.142.14	A+PTR	imailgrid.com
220.227.142.15	A+PTR	imailgrid.com
220.227.142.16	A+PTR	imailgrid.com
220.227.142.17	A+PTR	imailgrid.com
220.227.142.18	A+PTR	imailgrid.com
220.227.142.19	A+PTR	imailgrid.com
220.227.142.20	A+PTR	imailgrid.com
220.227.142.236	A	instantmail.in
220.227.142.236	A	www.instantmail.in
220.227.142.238	A	aplytics.com