Robtex

Up: 182.72.200.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 182.72.204.0/23
Down right: 182.72.206.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
182.72.204.2	PTR	nsg-static-002.204.72.182.airtel.in
182.72.204.50	A	mail.yashrasayan.com
182.72.204.50	A	mail.hlengineers.com
182.72.204.50	A	mailserver.hlengineers.com
182.72.204.121	PTR	nsg-static-121.204.72.182.airtel.in
182.72.204.121	A	eppl.in
182.72.205.34	A	www.poscomaharashtra.com
182.72.205.35	PTR	nsg-static-035.205.72.182.airtel.in
182.72.205.35	A	poscomart.com
182.72.205.35	A	www.poscomart.com
182.72.206.74	A	mail.iilskochi.net
182.72.206.74	A	mail.gmlindia.com
182.72.206.74	A	mail.iilschennai.net
182.72.206.100	PTR	nsg-static-100.206.72.182.airtel.in
182.72.206.109	A	mail.smartbooks.in
182.72.206.122	A	mobiveil.co.in
182.72.206.137	PTR	nsg-static-137.206.72.182.airtel.in
182.72.206.137	A	volkairlines.co.in
182.72.206.137	A	volkairlines.info
182.72.206.162	PTR	nsg-static-162.206.72.182.airtel.in
182.72.206.162	A	vtmslive.com
182.72.206.216	A	colaninfotech.net
182.72.206.218	PTR	nsg-static-218.206.72.182.airtel.in
182.72.207.22	PTR	mail.fredungroup.com
182.72.207.27	PTR	nsg-static-027.207.72.182.airtel.in
182.72.207.27	A	terminal-blocks-india.com
182.72.207.27	A	connectwell.net
182.72.207.134	PTR	mail.kazstroyindia.com
182.72.207.138	PTR	nsg-static-138.207.72.182.airtel.in
182.72.207.242	PTR	nsg-static-242.207.72.182.airtel.in
182.72.207.250	A	mail1.axiscap.in
182.72.207.251	PTR	nsg-static-251.207.72.182.airtel.in
182.72.207.251	A	webmail.axiscap.in