Robtex

Up: 121.7.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.7.192.0/22
Down right: 121.7.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.7.192.74	PTR	bb121-7-192-74.singnet.com.sg
121.7.192.171	A+PTR	bb121-7-192-171.singnet.com.sg
121.7.192.192	PTR	bb121-7-192-192.singnet.com.sg
121.7.192.207	A+PTR	bb121-7-192-207.singnet.com.sg
121.7.193.1	A	bb121-7-193-1.singnet.com.sg
121.7.193.2	A	bb121-7-193-2.singnet.com.sg
121.7.194.5	A+PTR	bb121-7-194-5.singnet.com.sg
121.7.194.12	A+PTR	bb121-7-194-12.singnet.com.sg
121.7.194.71	A+PTR	bb121-7-194-71.singnet.com.sg
121.7.195.43	A	bb121-7-195-43.singnet.com.sg
121.7.195.48	A+PTR	bb121-7-195-48.singnet.com.sg
121.7.195.155	A+PTR	bb121-7-195-155.singnet.com.sg
121.7.195.242	A+PTR	bb121-7-195-242.singnet.com.sg
121.7.195.242	A	learntitude.com
121.7.195.242	A	sgoceanus.com
121.7.196.93	A+PTR	bb121-7-196-93.singnet.com.sg
121.7.196.98	A+PTR	bb121-7-196-98.singnet.com.sg
121.7.196.178	A+PTR	bb121-7-196-178.singnet.com.sg
121.7.196.252	A	bb121-7-196-252.singnet.com.sg
121.7.197.1	A	bb121-7-197-1.singnet.com.sg
121.7.197.11	A+PTR	bb121-7-197-11.singnet.com.sg
121.7.197.88	A+PTR	bb121-7-197-88.singnet.com.sg
121.7.198.69	A+PTR	bb121-7-198-69.singnet.com.sg
121.7.198.108	A+PTR	bb121-7-198-108.singnet.com.sg
121.7.198.151	A+PTR	bb121-7-198-151.singnet.com.sg
121.7.198.190	A+PTR	bb121-7-198-190.singnet.com.sg
121.7.198.216	A+PTR	bb121-7-198-216.singnet.com.sg
121.7.198.225	A+PTR	bb121-7-198-225.singnet.com.sg
121.7.199.33	A+PTR	bb121-7-199-33.singnet.com.sg
121.7.199.125	A+PTR	bb121-7-199-125.singnet.com.sg
121.7.199.158	A+PTR	bb121-7-199-158.singnet.com.sg
121.7.199.158	A	clouddisk.org
121.7.199.168	PTR	bb121-7-199-168.singnet.com.sg
121.7.199.199	A+PTR	bb121-7-199-199.singnet.com.sg
121.7.199.233	PTR	bb121-7-199-233.singnet.com.sg