Robtex

Up: 121.240.208.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.240.208.0/22
Down right: 121.240.212.0/22

IP	Type	Hostname
121.240.208.65	PTR	121.240.208.65.static-kolkata.vsnl.net.in
121.240.209.147	PTR	121.240.209.147.static-kolkata.vsnl.net.in
121.240.209.150	PTR	121.240.209.150.static-kolkata.vsnl.net.in
121.240.209.150	A	web1.doeacckol.in
121.240.209.150	A	swf.org
121.240.209.155	PTR	121.240.209.155.static-kolkata.vsnl.net.in
121.240.209.155	A	ns1.doeacckol.in
121.240.209.156	PTR	121.240.209.156.static-kolkata.vsnl.net.in
121.240.209.156	A	ns2.doeacckol.in
121.240.211.178	A	pcblcare.com
121.240.214.47	PTR	121.240.214.47.static-kolkata.vsnl.net.in
121.240.215.7	A+PTR	ns1.vecc.gov.in
121.240.215.37	A	www.vecc.gov.in
121.240.215.40	A	mail.vecc.gov.in
121.240.215.46	A	mx4.vecc.gov.in
121.240.215.123	A+PTR	ns2.vecc.gov.in