Robtex

Up: 27.251.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 27.251.28.0/23
Down right: 27.251.30.0/23
(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
27.251.30.11	PTR	abs-static-11.30.251.27.aircel.co.in
27.251.30.21	PTR	abs-static-21.30.251.27.aircel.co.in
27.251.30.24	PTR	abs-static-24.30.251.27.aircel.co.in
27.251.30.34	PTR	abs-static-34.30.251.27.aircel.co.in
27.251.30.42	PTR	abs-static-42.30.251.27.aircel.co.in
27.251.30.56	PTR	abs-static-56.30.251.27.aircel.co.in
27.251.30.67	A	cauvery.zohoindia.com
27.251.30.68	A+PTR	narmada.zohoindia.com
27.251.30.69	A+PTR	vaigai.zohoindia.com
27.251.30.70	A+PTR	godavari.zohoindia.com
27.251.30.86	PTR	ns4.vtitan.com
27.251.30.91	PTR	abs-static-91.30.251.27.aircel.co.in
27.251.30.92	PTR	abs-static-92.30.251.27.aircel.co.in
27.251.30.105	A	krishna.zohoindia.com
27.251.30.106	PTR	abs-static-106.30.251.27.aircel.co.in
27.251.30.118	PTR	abs-static-118.30.251.27.aircel.co.in
27.251.30.127	PTR	abs-static-127.30.251.27.aircel.co.in
27.251.30.129	PTR	abs-static-129.30.251.27.aircel.co.in
27.251.30.134	PTR	abs-static-134.30.251.27.aircel.co.in
27.251.30.151	PTR	abs-static-151.30.251.27.aircel.co.in
27.251.30.156	PTR	abs-static-156.30.251.27.aircel.co.in
27.251.30.165	PTR	abs-static-165.30.251.27.aircel.co.in
27.251.30.177	PTR	abs-static-177.30.251.27.aircel.co.in
27.251.30.178	PTR	abs-static-178.30.251.27.aircel.co.in
27.251.30.179	PTR	abs-static-179.30.251.27.aircel.co.in
27.251.30.206	PTR	abs-static-206.30.251.27.aircel.co.in
27.251.30.228	PTR	abs-static-228.30.251.27.aircel.co.in
27.251.30.233	PTR	abs-static-233.30.251.27.aircel.co.in
27.251.30.249	A	www.royalsundaram.co.in
27.251.30.249	A	royalsundaram.co.in
27.251.30.255	PTR	abs-static-255.30.251.27.aircel.co.in
27.251.31.139	PTR	abs-static-139.31.251.27.aircel.co.in
27.251.31.210	PTR	abs-static-210.31.251.27.aircel.co.in
27.251.31.212	PTR	mail.aurobindo.com
27.251.31.216	PTR	mail2.aurobindo.com