Robtex

Up: 182.72.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 182.72.56.0/22
Down right: 182.72.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
182.72.56.51	PTR	nsg-static-051.56.72.182.airtel.in
182.72.56.88	PTR	nsg-static-088.56.72.182.airtel.in
182.72.56.98	PTR	incaendo.com
182.72.56.129	PTR	nsg-static-129.56.72.182.airtel.in
182.72.56.131	PTR	nsg-static-131.56.72.182.airtel.in
182.72.56.138	PTR	nsg-static-138.56.72.182.airtel.in
182.72.56.177	PTR	nsg-static-177.56.72.182.airtel.in
182.72.56.179	PTR	nsg-static-179.56.72.182.airtel.in
182.72.56.185	PTR	nsg-static-185.56.72.182.airtel.in
182.72.56.209	PTR	nsg-static-209.56.72.182.airtel.in
182.72.56.210	PTR	nsg-static-210.56.72.182.airtel.in
182.72.56.211	PTR	nsg-static-211.56.72.182.airtel.in
182.72.56.232	PTR	nsg-static-232.56.72.182.airtel.in
182.72.57.3	A	seiren.co.in
182.72.57.36	A+PTR	mx3.bolhmanagement.com
182.72.57.38	A	mx5.bolhmanagement.com
182.72.57.74	A	mail.kochhar.com
182.72.57.82	PTR	nsg-static-082.57.72.182.airtel.in
182.72.57.82	A	grameen.co.in
182.72.57.83	PTR	nsg-static-083.57.72.182.airtel.in
182.72.57.83	A	mail.gfsl.in
182.72.57.85	PTR	nsg-static-085.57.72.182.airtel.in
182.72.57.85	A	gfsinfocentre.com
182.72.57.250	A	cnnl.in
182.72.58.4	PTR	nsg-static-004.58.72.182.airtel.in
182.72.58.6	A	hotelluzsf.com
182.72.58.6	A	pousadapraiadotombo.com
182.72.58.11	PTR	nsg-static-011.58.72.182.airtel.in
182.72.58.27	PTR	nsg-static-027.58.72.182.airtel.in
182.72.58.33	PTR	nsg-static-033.58.72.182.airtel.in
182.72.58.42	PTR	gatekeeper2.zodiacmtc.com
182.72.58.51	PTR	mail.sirmaxochem.in
182.72.58.52	A	mail.sirmaxochem.in
182.72.58.67	PTR	nsg-static-067.58.72.182.airtel.in
182.72.58.82	PTR	mail.abdindia.com
182.72.58.83	PTR	mail.abdindia.com
182.72.58.105	PTR	nsg-static-105.58.72.182.airtel.in
182.72.58.107	PTR	nsg-static-107.58.72.182.airtel.in
182.72.58.115	PTR	nsg-static-115.58.72.182.airtel.in
182.72.58.120	PTR	nsg-static-120.58.72.182.airtel.in
182.72.58.121	PTR	nsg-static-121.58.72.182.airtel.in
182.72.58.131	PTR	mail.celloworld.com
182.72.58.131	A	mail.prego.in
182.72.58.131	A	mail.cellokitchenette.com
182.72.58.136	PTR	nsg-static-136.58.72.182.airtel.in
182.72.58.144	PTR	nsg-static-144.58.72.182.airtel.in
182.72.58.145	PTR	nsg-static-145.58.72.182.airtel.in
182.72.58.155	PTR	nsg-static-155.58.72.182.airtel.in
182.72.58.162	PTR	nsg-static-162.58.72.182.airtel.in
182.72.58.169	PTR	nsg-static-169.58.72.182.airtel.in
182.72.58.170	PTR	nsg-static-170.58.72.182.airtel.in
182.72.58.201	PTR	nsg-static-201.58.72.182.airtel.in
182.72.58.212	A	mx1.indiatransact.com
182.72.58.212	A	mx2.indiatransact.com
182.72.58.212	A	mx3.indiatransact.com
182.72.58.218	PTR	nsg-static-218.58.72.182.airtel.in
182.72.58.233	PTR	nsg-static-233.58.72.182.airtel.in
182.72.58.234	PTR	nsg-static-234.58.72.182.airtel.in
182.72.58.248	PTR	nsg-static-248.58.72.182.airtel.in
182.72.59.49	PTR	nsg-static-049.59.72.182.airtel.in
182.72.59.53	PTR	nsg-static-053.59.72.182.airtel.in
182.72.59.56	PTR	nsg-static-056.59.72.182.airtel.in
182.72.60.122	PTR	nsg-static-122.60.72.182.airtel.in
182.72.60.202	PTR	nsg-static-202.60.72.182.airtel.in
182.72.60.219	PTR	nsg-static-219.60.72.182.airtel.in
182.72.60.251	A	ssiipl.com
182.72.61.17	PTR	nsg-static-017.61.72.182.airtel.in
182.72.61.26	PTR	nsg-static-026.61.72.182.airtel.in
182.72.61.51	PTR	nsg-static-051.61.72.182.airtel.in
182.72.61.65	PTR	nsg-static-065.61.72.182.airtel.in
182.72.61.82	PTR	nsg-static-082.61.72.182.airtel.in
182.72.61.112	PTR	nsg-static-112.61.72.182.airtel.in
182.72.61.113	PTR	nsg-static-113.61.72.182.airtel.in
182.72.61.146	A	mx1.rajaniassociates.net
182.72.61.150	A	cashadvancesource.in
182.72.61.154	PTR	nsg-static-154.61.72.182.airtel.in
182.72.61.163	PTR	nsg-static-163.61.72.182.airtel.in
182.72.61.184	PTR	nsg-static-184.61.72.182.airtel.in
182.72.61.186	PTR	nsg-static-186.61.72.182.airtel.in
182.72.62.58	A	walaasalvage.com
182.72.62.130	PTR	nsg-static-130.62.72.182.airtel.in
182.72.63.2	PTR	nsg-static-002.63.72.182.airtel.in
182.72.63.2	A	rainmail.rkmpowergen.in
182.72.63.4	A	mail.rkmpowergen.in
182.72.63.4	A	rkmpowergen.in
182.72.63.8	PTR	nsg-static-008.63.72.182.airtel.in
182.72.63.11	A	mopvaishnav.in
182.72.63.11	A	mopvcfw.in
182.72.63.91	PTR	nsg-static-091.63.72.182.airtel.in
182.72.63.145	PTR	nsg-static-145.63.72.182.airtel.in
182.72.63.244	A	ecoms.in