Robtex

Up: 121.6.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.6.136.0/22
Down right: 121.6.140.0/22

IP	Type	Hostname
121.6.136.21	A+PTR	bb121-6-136-21.singnet.com.sg
121.6.136.128	A+PTR	bb121-6-136-128.singnet.com.sg
121.6.136.159	PTR	bb121-6-136-159.singnet.com.sg
121.6.136.204	A+PTR	bb121-6-136-204.singnet.com.sg
121.6.136.214	PTR	bb121-6-136-214.singnet.com.sg
121.6.137.163	A+PTR	bb121-6-137-163.singnet.com.sg
121.6.138.181	A	bb121-6-138-181.singnet.com.sg
121.6.138.234	A+PTR	bb121-6-138-234.singnet.com.sg
121.6.139.70	A+PTR	bb121-6-139-70.singnet.com.sg
121.6.139.73	A	bb121-6-139-73.singnet.com.sg
121.6.139.96	A+PTR	bb121-6-139-96.singnet.com.sg
121.6.139.163	A+PTR	bb121-6-139-163.singnet.com.sg
121.6.141.9	A+PTR	bb121-6-141-9.singnet.com.sg
121.6.141.13	A+PTR	bb121-6-141-13.singnet.com.sg
121.6.141.31	A+PTR	bb121-6-141-31.singnet.com.sg
121.6.141.34	A+PTR	bb121-6-141-34.singnet.com.sg
121.6.141.60	A+PTR	bb121-6-141-60.singnet.com.sg
121.6.141.65	PTR	bb121-6-141-65.singnet.com.sg
121.6.141.66	A+PTR	bb121-6-141-66.singnet.com.sg
121.6.141.100	PTR	bb121-6-141-100.singnet.com.sg
121.6.141.209	A	bb121-6-141-209.singnet.com.sg
121.6.142.181	A+PTR	bb121-6-142-181.singnet.com.sg
121.6.143.42	A	bb121-6-143-42.singnet.com.sg
121.6.143.90	PTR	bb121-6-143-90.singnet.com.sg
121.6.143.118	A	bb121-6-143-118.singnet.com.sg
121.6.143.153	A	bb121-6-143-153.singnet.com.sg
121.6.143.156	A	bb121-6-143-156.singnet.com.sg
121.6.143.161	A+PTR	bb121-6-143-161.singnet.com.sg