Robtex

Up: 121.6.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 121.6.0.0/25
Down right: 121.6.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.6.0.2	PTR	bb121-6-0-2.singnet.com.sg
121.6.0.4	A+PTR	bb121-6-0-4.singnet.com.sg
121.6.0.7	A+PTR	bb121-6-0-7.singnet.com.sg
121.6.0.8	A+PTR	bb121-6-0-8.singnet.com.sg
121.6.0.10	A+PTR	bb121-6-0-10.singnet.com.sg
121.6.0.30	A+PTR	bb121-6-0-30.singnet.com.sg
121.6.0.36	A+PTR	bb121-6-0-36.singnet.com.sg
121.6.0.37	PTR	bb121-6-0-37.singnet.com.sg
121.6.0.38	A+PTR	bb121-6-0-38.singnet.com.sg
121.6.0.46	PTR	bb121-6-0-46.singnet.com.sg
121.6.0.61	A+PTR	bb121-6-0-61.singnet.com.sg
121.6.0.62	A+PTR	bb121-6-0-62.singnet.com.sg
121.6.0.64	A+PTR	bb121-6-0-64.singnet.com.sg
121.6.0.65	A+PTR	bb121-6-0-65.singnet.com.sg
121.6.0.68	A+PTR	bb121-6-0-68.singnet.com.sg
121.6.0.72	A+PTR	bb121-6-0-72.singnet.com.sg
121.6.0.74	A+PTR	bb121-6-0-74.singnet.com.sg
121.6.0.76	A+PTR	bb121-6-0-76.singnet.com.sg
121.6.0.78	A+PTR	bb121-6-0-78.singnet.com.sg
121.6.0.84	A+PTR	bb121-6-0-84.singnet.com.sg
121.6.0.86	A+PTR	bb121-6-0-86.singnet.com.sg
121.6.0.90	A+PTR	bb121-6-0-90.singnet.com.sg
121.6.0.92	A+PTR	bb121-6-0-92.singnet.com.sg
121.6.0.93	A+PTR	bb121-6-0-93.singnet.com.sg
121.6.0.94	A+PTR	bb121-6-0-94.singnet.com.sg
121.6.0.95	A+PTR	bb121-6-0-95.singnet.com.sg
121.6.0.96	A+PTR	bb121-6-0-96.singnet.com.sg
121.6.0.97	A+PTR	bb121-6-0-97.singnet.com.sg
121.6.0.98	A+PTR	bb121-6-0-98.singnet.com.sg
121.6.0.100	A+PTR	bb121-6-0-100.singnet.com.sg
121.6.0.110	A+PTR	bb121-6-0-110.singnet.com.sg
121.6.0.112	A+PTR	bb121-6-0-112.singnet.com.sg
121.6.0.116	A+PTR	bb121-6-0-116.singnet.com.sg
121.6.0.120	A+PTR	bb121-6-0-120.singnet.com.sg
121.6.0.124	A+PTR	bb121-6-0-124.singnet.com.sg
121.6.0.126	A+PTR	bb121-6-0-126.singnet.com.sg
121.6.0.132	A+PTR	bb121-6-0-132.singnet.com.sg
121.6.0.134	A+PTR	bb121-6-0-134.singnet.com.sg
121.6.0.139	A+PTR	bb121-6-0-139.singnet.com.sg
121.6.0.140	A+PTR	bb121-6-0-140.singnet.com.sg
121.6.0.142	PTR	bb121-6-0-142.singnet.com.sg
121.6.0.142	A	ildatatech.com
121.6.0.142	A	huangzx.net
121.6.0.144	A+PTR	bb121-6-0-144.singnet.com.sg
121.6.0.148	A+PTR	bb121-6-0-148.singnet.com.sg
121.6.0.150	A+PTR	bb121-6-0-150.singnet.com.sg
121.6.0.151	A+PTR	bb121-6-0-151.singnet.com.sg
121.6.0.152	A+PTR	bb121-6-0-152.singnet.com.sg
121.6.0.154	A+PTR	bb121-6-0-154.singnet.com.sg
121.6.0.156	A+PTR	bb121-6-0-156.singnet.com.sg
121.6.0.158	A+PTR	bb121-6-0-158.singnet.com.sg
121.6.0.160	A+PTR	bb121-6-0-160.singnet.com.sg
121.6.0.162	A+PTR	bb121-6-0-162.singnet.com.sg
121.6.0.163	A+PTR	bb121-6-0-163.singnet.com.sg
121.6.0.164	A+PTR	bb121-6-0-164.singnet.com.sg
121.6.0.167	A+PTR	bb121-6-0-167.singnet.com.sg
121.6.0.168	A+PTR	bb121-6-0-168.singnet.com.sg
121.6.0.170	A+PTR	bb121-6-0-170.singnet.com.sg
121.6.0.174	A+PTR	bb121-6-0-174.singnet.com.sg
121.6.0.176	A+PTR	bb121-6-0-176.singnet.com.sg
121.6.0.178	A+PTR	bb121-6-0-178.singnet.com.sg
121.6.0.180	A+PTR	bb121-6-0-180.singnet.com.sg
121.6.0.182	A+PTR	bb121-6-0-182.singnet.com.sg
121.6.0.188	A+PTR	bb121-6-0-188.singnet.com.sg
121.6.0.190	A+PTR	bb121-6-0-190.singnet.com.sg
121.6.0.195	A+PTR	bb121-6-0-195.singnet.com.sg
121.6.0.196	A+PTR	bb121-6-0-196.singnet.com.sg
121.6.0.204	A+PTR	bb121-6-0-204.singnet.com.sg
121.6.0.212	A+PTR	bb121-6-0-212.singnet.com.sg
121.6.0.214	A+PTR	bb121-6-0-214.singnet.com.sg
121.6.0.220	A+PTR	bb121-6-0-220.singnet.com.sg
121.6.0.229	A	bb121-6-0-229.singnet.com.sg
121.6.0.232	A+PTR	bb121-6-0-232.singnet.com.sg
121.6.0.236	A+PTR	bb121-6-0-236.singnet.com.sg
121.6.0.237	A+PTR	bb121-6-0-237.singnet.com.sg
121.6.0.240	A+PTR	bb121-6-0-240.singnet.com.sg
121.6.0.242	A+PTR	bb121-6-0-242.singnet.com.sg
121.6.0.244	A+PTR	bb121-6-0-244.singnet.com.sg
121.6.0.246	A+PTR	bb121-6-0-246.singnet.com.sg
121.6.0.248	A+PTR	bb121-6-0-248.singnet.com.sg
121.6.0.252	A+PTR	bb121-6-0-252.singnet.com.sg
121.6.0.253	A+PTR	bb121-6-0-253.singnet.com.sg
121.6.0.254	A+PTR	bb121-6-0-254.singnet.com.sg