Robtex

Up: 220.227.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 220.227.192.0/23
Down right: 220.227.194.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.227.194.2	PTR	mail.mphrx.com
220.227.194.2	A	mail.mphrx.org
220.227.194.2	A	mail.mphrx.biz
220.227.194.18	PTR	webmail.saharastar.com
220.227.194.22	A+PTR	webmail.saharastar.com
220.227.194.28	PTR	alert1.fss.co.in