Robtex

Up: 27.251.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 27.251.44.0/23
Down right: 27.251.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.251.44.9	A	mx.mahatamil.in
27.251.44.10	A+PTR	mx.lancogroup.com
27.251.44.13	A+PTR	mail.lancogroup.com
27.251.44.13	A	smtp.lancogroup.com
27.251.44.117	A+PTR	smtp2.sahara.in
27.251.44.117	A	smtp.saharamutual.com
27.251.44.117	A	mail.saharamutual.com
27.251.44.125	A	smtp.knowledgelinux.com
27.251.44.227	PTR	noidaip.jagran.com
27.251.46.18	PTR	abs-static-18.46.251.27.aircel.co.in
27.251.46.66	A	mx1.egis-india.com
27.251.46.197	PTR	abs-static-197.46.251.27.aircel.co.in
27.251.46.197	A	wifi.aircel.in
27.251.46.198	A	wifi.aircel.in
27.251.47.1	PTR	abs-static-1.47.251.27.aircel.co.in
27.251.47.3	PTR	abs-static-3.47.251.27.aircel.co.in
27.251.47.3	A	mail5.padminiengg.com
27.251.47.14	PTR	abs-static-14.47.251.27.aircel.co.in
27.251.47.40	PTR	abs-static-40.47.251.27.aircel.co.in
27.251.47.44	PTR	abs-static-44.47.251.27.aircel.co.in
27.251.47.48	PTR	abs-static-48.47.251.27.aircel.co.in
27.251.47.49	PTR	abs-static-49.47.251.27.aircel.co.in
27.251.47.67	PTR	67.47.251.27-static.reverse.scriptclone.in
27.251.47.75	PTR	mailpromotion.in
27.251.47.77	PTR	redhatmobitech.com
27.251.47.89	PTR	abs-static-89.47.251.27.aircel.co.in
27.251.47.92	PTR	abs-static-92.47.251.27.aircel.co.in
27.251.47.98	PTR	abs-static-98.47.251.27.aircel.co.in
27.251.47.102	PTR	abs-static-102.47.251.27.aircel.co.in
27.251.47.106	PTR	abs-static-106.47.251.27.aircel.co.in
27.251.47.107	PTR	abs-static-107.47.251.27.aircel.co.in
27.251.47.109	PTR	abs-static-109.47.251.27.aircel.co.in
27.251.47.117	PTR	mail.smcindiaonline.com
27.251.47.118	A	gw2.smcinsurance.biz
27.251.47.120	PTR	abs-static-120.47.251.27.aircel.co.in
27.251.47.123	PTR	abs-static-123.47.251.27.aircel.co.in
27.251.47.126	PTR	abs-static-126.47.251.27.aircel.co.in
27.251.47.135	A+PTR	backupmailserver.kassa.in
27.251.47.153	PTR	abs-static-153.47.251.27.aircel.co.in
27.251.47.155	PTR	abs-static-155.47.251.27.aircel.co.in
27.251.47.157	PTR	abs-static-157.47.251.27.aircel.co.in
27.251.47.161	PTR	abs-static-161.47.251.27.aircel.co.in
27.251.47.162	PTR	abs-static-162.47.251.27.aircel.co.in
27.251.47.163	PTR	abs-static-163.47.251.27.aircel.co.in
27.251.47.183	PTR	abs-static-183.47.251.27.aircel.co.in
27.251.47.185	PTR	abs-static-185.47.251.27.aircel.co.in
27.251.47.186	PTR	abs-static-186.47.251.27.aircel.co.in
27.251.47.195	PTR	abs-static-195.47.251.27.aircel.co.in
27.251.47.196	PTR	abs-static-196.47.251.27.aircel.co.in
27.251.47.202	PTR	abs-static-202.47.251.27.aircel.co.in
27.251.47.208	PTR	abs-static-208.47.251.27.aircel.co.in
27.251.47.221	PTR	abs-static-221.47.251.27.aircel.co.in
27.251.47.230	PTR	abs-static-230.47.251.27.aircel.co.in
27.251.47.232	PTR	abs-static-232.47.251.27.aircel.co.in
27.251.47.235	PTR	abs-static-235.47.251.27.aircel.co.in
27.251.47.244	PTR	abs-static-244.47.251.27.aircel.co.in
27.251.47.246	PTR	abs-static-246.47.251.27.aircel.co.in
27.251.47.248	PTR	abs-static-248.47.251.27.aircel.co.in
27.251.47.250	PTR	abs-static-250.47.251.27.aircel.co.in