21.125.137 is a class C of IPs

Sample IPs from the class C 21.125.137

21.125.137.44	View precise location of 21.125.137.44 on the map!
21.125.137.103	View precise location of 21.125.137.103 on the map!
21.125.137.199	View precise location of 21.125.137.199 on the map!
21.125.137.249	View precise location of 21.125.137.249 on the map!
21.125.137.75	View precise location of 21.125.137.75 on the map!
21.125.137.56	View precise location of 21.125.137.56 on the map!
21.125.137.68	View precise location of 21.125.137.68 on the map!
21.125.137.237	View precise location of 21.125.137.237 on the map!
21.125.137.184	View precise location of 21.125.137.184 on the map!
21.125.137.171	View precise location of 21.125.137.171 on the map!
21.125.137.66	View precise location of 21.125.137.66 on the map!

10 Random IPs

49.185.167.101	Find precise map location of 49.185.167.101
160.211.53.119	Find precise map location of 160.211.53.119
94.99.164.48	Find precise map location of 94.99.164.48
179.159.172.96	Find precise map location of 179.159.172.96
79.191.31.72	Find precise map location of 79.191.31.72
91.233.33.202	Find precise map location of 91.233.33.202
35.227.56.201	Find precise map location of 35.227.56.201
231.1.227.136	Find precise map location of 231.1.227.136
91.173.46.149	Find precise map location of 91.173.46.149
4.187.249.45	Find precise map location of 4.187.249.45
220.195.30.131	Find precise map location of 220.195.30.131

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