Robtex

Up: 121.7.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 121.7.160.0/22
Down right: 121.7.164.0/22

IP	Type	Hostname
121.7.160.19	PTR	bb121-7-160-19.singnet.com.sg
121.7.160.87	A	bb121-7-160-87.singnet.com.sg
121.7.160.122	PTR	bb121-7-160-122.singnet.com.sg
121.7.160.187	PTR	bb121-7-160-187.singnet.com.sg
121.7.161.142	A+PTR	bb121-7-161-142.singnet.com.sg
121.7.162.18	A	bb121-7-162-18.singnet.com.sg
121.7.162.20	A	smtp.kenputer.biz
121.7.162.20	A	*.kenputer.biz
121.7.162.182	PTR	bb121-7-162-182.singnet.com.sg
121.7.162.191	A	brompton.homedns.org
121.7.163.47	A+PTR	bb121-7-163-47.singnet.com.sg
121.7.163.153	A+PTR	bb121-7-163-153.singnet.com.sg
121.7.164.10	A+PTR	bb121-7-164-10.singnet.com.sg
121.7.164.16	A+PTR	bb121-7-164-16.singnet.com.sg
121.7.164.60	A	mail.xu-ibg.com
121.7.164.60	A	xu-ibg.com
121.7.164.67	A	congyuan.net
121.7.164.234	A+PTR	bb121-7-164-234.singnet.com.sg
121.7.165.106	A+PTR	bb121-7-165-106.singnet.com.sg
121.7.165.106	A	edu-sh.com
121.7.165.147	PTR	bb121-7-165-147.singnet.com.sg
121.7.165.201	A+PTR	bb121-7-165-201.singnet.com.sg
121.7.167.7	A+PTR	bb121-7-167-7.singnet.com.sg
121.7.167.42	A+PTR	bb121-7-167-42.singnet.com.sg
121.7.167.77	A+PTR	bb121-7-167-77.singnet.com.sg
121.7.167.149	A+PTR	bb121-7-167-149.singnet.com.sg