Robtex

Up: 121.7.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.7.40.0/22
Down right: 121.7.44.0/22

IP	Type	Hostname
121.7.41.43	PTR	bb121-7-41-43.singnet.com.sg
121.7.43.73	A+PTR	bb121-7-43-73.singnet.com.sg
121.7.43.73	A	mail.myprivatecorp.com
121.7.43.103	A+PTR	bb121-7-43-103.singnet.com.sg
121.7.43.155	PTR	bb121-7-43-155.singnet.com.sg
121.7.45.102	A+PTR	bb121-7-45-102.singnet.com.sg
121.7.45.102	A	bertdfgseekil.ooo
121.7.45.254	A+PTR	bb121-7-45-254.singnet.com.sg
121.7.46.111	PTR	bb121-7-46-111.singnet.com.sg
121.7.46.215	A	bb121-7-46-215.singnet.com.sg
121.7.47.3	A+PTR	bb121-7-47-3.singnet.com.sg
121.7.47.180	A	bb121-7-47-180.singnet.com.sg
121.7.47.206	A	bb121-7-47-206.singnet.com.sg