Robtex

Up: 27.251.28.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 27.251.28.0/25
Down right: 27.251.28.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.251.28.9	PTR	abs-static-9.28.251.27.aircel.co.in
27.251.28.10	A	mail.pimsmmm.net
27.251.28.71	A	mail.ushareinfo.com
27.251.28.143	A+PTR	webmail.snmail.org
27.251.28.143	A	pop.snmail.org
27.251.28.143	A	www.snmail.org