Robtex

Up: 121.6.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.6.24.0/22
Down right: 121.6.28.0/22

IP	Type	Hostname
121.6.24.20	A	bb121-6-24-20.singnet.com.sg
121.6.24.147	A+PTR	bb121-6-24-147.singnet.com.sg
121.6.24.177	A	www.tip.com.sg
121.6.24.177	A	ambersolutions.com
121.6.25.2	A+PTR	bb121-6-25-2.singnet.com.sg
121.6.25.6	A	bb121-6-25-6.singnet.com.sg
121.6.25.8	A+PTR	bb121-6-25-8.singnet.com.sg
121.6.25.36	A	bb121-6-25-36.singnet.com.sg
121.6.25.133	A	bb121-6-25-133.singnet.com.sg
121.6.25.141	A	bb121-6-25-141.singnet.com.sg
121.6.25.145	PTR	bb121-6-25-145.singnet.com.sg
121.6.26.2	PTR	bb121-6-26-2.singnet.com.sg
121.6.26.115	A+PTR	bb121-6-26-115.singnet.com.sg
121.6.27.101	A+PTR	bb121-6-27-101.singnet.com.sg
121.6.27.111	A+PTR	bb121-6-27-111.singnet.com.sg
121.6.27.111	A	mail.kasvision.com
121.6.27.111	A	kasvision.com
121.6.28.2	A	bb121-6-28-2.singnet.com.sg
121.6.28.8	A+PTR	bb121-6-28-8.singnet.com.sg
121.6.28.64	A+PTR	bb121-6-28-64.singnet.com.sg
121.6.28.81	A+PTR	bb121-6-28-81.singnet.com.sg
121.6.28.139	A	bb121-6-28-139.singnet.com.sg
121.6.28.241	A+PTR	bb121-6-28-241.singnet.com.sg
121.6.29.2	A+PTR	bb121-6-29-2.singnet.com.sg
121.6.29.58	A+PTR	bb121-6-29-58.singnet.com.sg
121.6.29.93	A+PTR	bb121-6-29-93.singnet.com.sg
121.6.29.155	A+PTR	bb121-6-29-155.singnet.com.sg
121.6.29.228	PTR	bb121-6-29-228.singnet.com.sg
121.6.30.2	PTR	bb121-6-30-2.singnet.com.sg
121.6.30.128	A+PTR	bb121-6-30-128.singnet.com.sg
121.6.31.52	A	bb121-6-31-52.singnet.com.sg
121.6.31.81	A+PTR	bb121-6-31-81.singnet.com.sg
121.6.31.206	A	bb121-6-31-206.singnet.com.sg
121.6.31.213	A	bb121-6-31-213.singnet.com.sg
121.6.31.220	A	bb121-6-31-220.singnet.com.sg