Robtex

Up: 121.6.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.6.192.0/22
Down right: 121.6.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.6.192.6	A+PTR	bb121-6-192-6.singnet.com.sg
121.6.193.54	A+PTR	bb121-6-193-54.singnet.com.sg
121.6.193.54	A	elittlespace.com
121.6.193.219	A+PTR	bb121-6-193-219.singnet.com.sg
121.6.193.240	A+PTR	bb121-6-193-240.singnet.com.sg
121.6.193.242	PTR	bb121-6-193-242.singnet.com.sg
121.6.194.71	A	ns4.ziox.us
121.6.194.71	A	*.ziox.us
121.6.194.71	A	ns1.ziox.us
121.6.194.141	A+PTR	bb121-6-194-141.singnet.com.sg
121.6.194.141	A	singapore.homelinux.org
121.6.194.170	A	mail.ciscovery.com
121.6.194.170	A	ciscovery.com
121.6.195.53	A	bb121-6-195-53.singnet.com.sg
121.6.195.60	A	bb121-6-195-60.singnet.com.sg
121.6.196.83	PTR	bb121-6-196-83.singnet.com.sg
121.6.196.95	A+PTR	bb121-6-196-95.singnet.com.sg
121.6.196.209	A	bb121-6-196-209.singnet.com.sg
121.6.197.157	A+PTR	bb121-6-197-157.singnet.com.sg
121.6.197.219	A+PTR	bb121-6-197-219.singnet.com.sg
121.6.198.53	A+PTR	bb121-6-198-53.singnet.com.sg
121.6.198.191	A+PTR	bb121-6-198-191.singnet.com.sg
121.6.199.5	A+PTR	bb121-6-199-5.singnet.com.sg
121.6.199.67	A+PTR	bb121-6-199-67.singnet.com.sg
121.6.199.79	PTR	bb121-6-199-79.singnet.com.sg
121.6.199.118	A+PTR	bb121-6-199-118.singnet.com.sg
121.6.199.118	A	topseals-traders.com