Robtex

Up: 121.6.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 121.6.64.0/21
Down right: 121.6.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.6.64.160	PTR	bb121-6-64-160.singnet.com.sg
121.6.64.205	A	bb121-6-64-205.singnet.com.sg
121.6.64.225	PTR	bb121-6-64-225.singnet.com.sg
121.6.65.112	A+PTR	bb121-6-65-112.singnet.com.sg
121.6.65.123	A	bb121-6-65-123.singnet.com.sg
121.6.65.201	A	bb121-6-65-201.singnet.com.sg
121.6.65.215	A	bb121-6-65-215.singnet.com.sg
121.6.65.227	PTR	bb121-6-65-227.singnet.com.sg
121.6.66.195	A	bb121-6-66-195.singnet.com.sg
121.6.67.71	A	bb121-6-67-71.singnet.com.sg
121.6.67.136	A	bb121-6-67-136.singnet.com.sg
121.6.67.166	A	bb121-6-67-166.singnet.com.sg
121.6.68.97	A+PTR	bb121-6-68-97.singnet.com.sg
121.6.68.116	A+PTR	bb121-6-68-116.singnet.com.sg
121.6.68.203	A	bb121-6-68-203.singnet.com.sg
121.6.69.72	A	bb121-6-69-72.singnet.com.sg
121.6.69.78	A+PTR	bb121-6-69-78.singnet.com.sg
121.6.69.94	A+PTR	bb121-6-69-94.singnet.com.sg
121.6.71.119	A+PTR	bb121-6-71-119.singnet.com.sg
121.6.73.224	A+PTR	bb121-6-73-224.singnet.com.sg
121.6.74.2	A	bb121-6-74-2.singnet.com.sg
121.6.74.44	A+PTR	bb121-6-74-44.singnet.com.sg
121.6.76.8	A+PTR	bb121-6-76-8.singnet.com.sg
121.6.76.8	A	lgfl8.com
121.6.76.44	A+PTR	bb121-6-76-44.singnet.com.sg
121.6.76.44	A	zhonghuawushu.info
121.6.76.44	A	aktio.com.sg
121.6.76.98	A+PTR	bb121-6-76-98.singnet.com.sg
121.6.77.148	A+PTR	bb121-6-77-148.singnet.com.sg
121.6.78.168	A	bb121-6-78-168.singnet.com.sg
121.6.78.218	A+PTR	bb121-6-78-218.singnet.com.sg
121.6.79.23	A+PTR	bb121-6-79-23.singnet.com.sg
121.6.79.25	A	smilelinkdental.com
121.6.79.195	A+PTR	bb121-6-79-195.singnet.com.sg