Robtex

Up: 27.251.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 27.251.192.0/20
Down right: 27.251.208.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.251.192.2	PTR	abs-static-2.192.251.27.aircel.co.in
27.251.193.35	PTR	abs-static-35.193.251.27.aircel.co.in
27.251.193.160	PTR	abs-static-160.193.251.27.aircel.co.in
27.251.193.162	PTR	abs-static-162.193.251.27.aircel.co.in
27.251.193.192	PTR	aircel-gprs-192.193.251.27.aircel.co.in
27.251.194.227	PTR	mail.varachhabank.com
27.251.195.34	PTR	abs-static-34.195.251.27.aircel.co.in
27.251.195.38	PTR	abs-static-38.195.251.27.aircel.co.in
27.251.195.38	A	psit.ac.in
27.251.195.38	A	www.psit.ac.in
27.251.195.57	PTR	abs-static-57.195.251.27.aircel.co.in
27.251.195.163	PTR	aircel-gprs-163.195.251.27.aircel.co.in
27.251.195.163	A	crownpramodyadav.com
27.251.195.163	A	nkkhannaartist.com
27.251.195.225	PTR	aircel-gprs-225.195.251.27.aircel.co.in
27.251.196.171	PTR	abs-static-171.196.251.27.aircel.co.in
27.251.196.171	A	webmail.vnl.in
27.251.196.172	A+PTR	mailx.vnl.in
27.251.196.172	A	mail.shyamtelecom.com
27.251.196.172	A	mail2.shyam.co.in
27.251.197.15	PTR	abs-static-15.197.251.27.aircel.co.in
27.251.197.111	PTR	abs-static-111.197.251.27.aircel.co.in
27.251.197.114	A	icactus.in
27.251.197.115	PTR	abs-static-115.197.251.27.aircel.co.in
27.251.198.3	PTR	aircel-gprs-3.198.251.27.aircel.co.in
27.251.198.6	PTR	aircel-gprs-6.198.251.27.aircel.co.in
27.251.198.6	A	www.christuniversity.in
27.251.198.6	A	test.christuniversity.in
27.251.198.33	PTR	aircel-gprs-33.198.251.27.aircel.co.in
27.251.198.115	PTR	abs-static-115.198.251.27.aircel.co.in
27.251.199.34	PTR	aircel-gprs-34.199.251.27.aircel.co.in
27.251.199.117	PTR	aircel-gprs-117.199.251.27.aircel.co.in
27.251.200.52	PTR	aircel-gprs-52.200.251.27.aircel.co.in
27.251.200.182	PTR	aircel-gprs-182.200.251.27.aircel.co.in
27.251.200.254	PTR	abs-static-254.200.251.27.aircel.co.in
27.251.201.5	A+PTR	imap.jnport.com
27.251.201.5	A+PTR	mail.jnport.com
27.251.201.5	PTR	pop.jnport.com
27.251.201.6	A+PTR	edge.jnport.com
27.251.201.155	A	mail.skymailpune.com
27.251.201.155	A	mail.smartdatablr.com
27.251.201.155	A	mail.adroitmumbai.com
27.251.201.158	PTR	abs-static-158.201.251.27.aircel.co.in
27.251.202.50	PTR	abs-static-50.202.251.27.aircel.co.in
27.251.202.116	A	mail1.mail4ecel.com
27.251.203.114	PTR	abs-static-114.203.251.27.aircel.co.in
27.251.204.171	A	mx.wavegroup.in
27.251.204.177	A	mail.wavemalls.com
27.251.205.117	PTR	aircel-gprs-117.205.251.27.aircel.co.in
27.251.205.130	PTR	aircel-gprs-130.205.251.27.aircel.co.in
27.251.205.170	PTR	aircel-gprs-170.205.251.27.aircel.co.in
27.251.205.180	PTR	abs-static-180.205.251.27.aircel.co.in
27.251.205.180	A	mail.pacefin.co.in
27.251.206.34	PTR	tajtelevision.com
27.251.206.117	PTR	abs-static-117.206.251.27.aircel.co.in
27.251.207.52	PTR	abs-static-52.207.251.27.aircel.co.in
27.251.207.85	PTR	abs-static-85.207.251.27.aircel.co.in
27.251.207.101	PTR	abs-static-101.207.251.27.aircel.co.in
27.251.207.112	PTR	abs-static-112.207.251.27.aircel.co.in
27.251.207.117	PTR	aircel-gprs-117.207.251.27.aircel.co.in
27.251.207.119	PTR	abs-static-119.207.251.27.aircel.co.in
27.251.207.152	PTR	abs-static-152.207.251.27.aircel.co.in
27.251.207.168	PTR	abs-static-168.207.251.27.aircel.co.in
27.251.207.208	PTR	aircel-gprs-208.207.251.27.aircel.co.in
27.251.207.245	PTR	abs-static-245.207.251.27.aircel.co.in
27.251.208.19	PTR	abs-static-19.208.251.27.aircel.co.in
27.251.208.218	A	mail.unityexports.com
27.251.208.218	A	mx1.unityexports.com
27.251.208.218	A	mx1.akiratextiles.com
27.251.209.40	A	talentxindia.com
27.251.209.40	A	mail.netambit.in
27.251.209.40	A	netambit.in
27.251.210.5	PTR	abs-static-5.210.251.27.aircel.co.in
27.251.210.5	A	mailjp.sulekha.net
27.251.210.5	A	mail.sulekha.net
27.251.210.67	A+PTR	postman.realimage.co.in
27.251.210.67	A	titan.realimage.com
27.251.210.67	A	mail.realimage.co.in
27.251.210.70	A+PTR	arrival.realimage.co.in
27.251.210.210	PTR	abs-static-210.210.251.27.aircel.co.in
27.251.211.132	PTR	abs-static-132.211.251.27.aircel.co.in
27.251.211.238	PTR	abs-static-238.211.251.27.aircel.co.in
27.251.213.116	PTR	aircel-gprs-116.213.251.27.aircel.co.in
27.251.213.163	PTR	abs-static-163.213.251.27.aircel.co.in
27.251.215.36	PTR	nalcoindia.co.in
27.251.215.40	PTR	nalco-fw.nalcoindia.co.in
27.251.215.51	PTR	mx5.nalcoindia.co.in
27.251.215.61	A	nalcoindia.net
27.251.215.178	PTR	abs-static-178.215.251.27.aircel.co.in
27.251.216.32	PTR	abs-static-32.216.251.27.aircel.co.in
27.251.216.34	PTR	abs-static-34.216.251.27.aircel.co.in
27.251.216.35	PTR	abs-static-35.216.251.27.aircel.co.in
27.251.216.160	PTR	abs-static-160.216.251.27.aircel.co.in
27.251.216.163	PTR	abs-static-163.216.251.27.aircel.co.in
27.251.216.193	PTR	abs-static-193.216.251.27.aircel.co.in
27.251.216.194	PTR	abs-static-194.216.251.27.aircel.co.in
27.251.216.195	PTR	bbdmail.co.in
27.251.216.195	A	bbdlkotnp.in
27.251.219.163	PTR	aircel-gprs-163.219.251.27.aircel.co.in
27.251.219.229	A	yorbit.co.uk
27.251.219.235	A	gowrielimited.net
27.251.220.2	PTR	abs-static-2.220.251.27.aircel.co.in
27.251.220.186	PTR	abs-static-186.220.251.27.aircel.co.in
27.251.220.197	A	mail.integraindia.in
27.251.220.197	A	mail.integraengineering.in