139.52.4 is a class C of IPs

Sample IPs from the class C 139.52.4

139.52.4.4	View precise location of 139.52.4.4 on the map!
139.52.4.45	View precise location of 139.52.4.45 on the map!
139.52.4.237	View precise location of 139.52.4.237 on the map!
139.52.4.119	View precise location of 139.52.4.119 on the map!
139.52.4.204	View precise location of 139.52.4.204 on the map!
139.52.4.129	View precise location of 139.52.4.129 on the map!
139.52.4.11	View precise location of 139.52.4.11 on the map!
139.52.4.157	View precise location of 139.52.4.157 on the map!
139.52.4.200	View precise location of 139.52.4.200 on the map!
139.52.4.238	View precise location of 139.52.4.238 on the map!
139.52.4.77	View precise location of 139.52.4.77 on the map!

10 Random IPs

113.34.144.160	Find precise map location of 113.34.144.160
98.253.106.183	Find precise map location of 98.253.106.183
99.210.52.19	Find precise map location of 99.210.52.19
196.195.224.180	Find precise map location of 196.195.224.180
10.134.121.39	Find precise map location of 10.134.121.39
36.233.86.188	Find precise map location of 36.233.86.188
81.76.3.113	Find precise map location of 81.76.3.113
81.123.220.103	Find precise map location of 81.123.220.103
89.6.89.43	Find precise map location of 89.6.89.43
116.54.175.229	Find precise map location of 116.54.175.229
125.109.170.35	Find precise map location of 125.109.170.35

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