106.21.37 is a class C of IPs

Sample IPs from the class C 106.21.37

106.21.37.24	View precise location of 106.21.37.24 on the map!
106.21.37.244	View precise location of 106.21.37.244 on the map!
106.21.37.69	View precise location of 106.21.37.69 on the map!
106.21.37.234	View precise location of 106.21.37.234 on the map!
106.21.37.178	View precise location of 106.21.37.178 on the map!
106.21.37.36	View precise location of 106.21.37.36 on the map!
106.21.37.185	View precise location of 106.21.37.185 on the map!
106.21.37.72	View precise location of 106.21.37.72 on the map!
106.21.37.143	View precise location of 106.21.37.143 on the map!
106.21.37.116	View precise location of 106.21.37.116 on the map!
106.21.37.164	View precise location of 106.21.37.164 on the map!

10 Random IPs

87.160.113.109	Find precise map location of 87.160.113.109
190.31.170.11	Find precise map location of 190.31.170.11
107.179.217.211	Find precise map location of 107.179.217.211
105.123.173.248	Find precise map location of 105.123.173.248
141.202.250.250	Find precise map location of 141.202.250.250
55.76.7.59	Find precise map location of 55.76.7.59
32.44.104.254	Find precise map location of 32.44.104.254
164.149.139.150	Find precise map location of 164.149.139.150
176.57.223.83	Find precise map location of 176.57.223.83
116.48.11.241	Find precise map location of 116.48.11.241
197.149.42.172	Find precise map location of 197.149.42.172

TestURI.org is a free web-sniffer.net alternative. It alows you to send custom HTTP request and check the HTTP response.