58.121 is a class B of IPs

Sample IPs from the class B 58.121

58.121.207.53	View precise location of 58.121.207.53 on the map!
58.121.152.37	View precise location of 58.121.152.37 on the map!
58.121.149.23	View precise location of 58.121.149.23 on the map!
58.121.237.55	View precise location of 58.121.237.55 on the map!
58.121.28.221	View precise location of 58.121.28.221 on the map!
58.121.15.143	View precise location of 58.121.15.143 on the map!
58.121.106.100	View precise location of 58.121.106.100 on the map!
58.121.189.168	View precise location of 58.121.189.168 on the map!
58.121.81.97	View precise location of 58.121.81.97 on the map!
58.121.132.39	View precise location of 58.121.132.39 on the map!
58.121.238.193	View precise location of 58.121.238.193 on the map!

10 Random IPs

73.215.124.23	Find precise map location of 73.215.124.23
222.244.64.125	Find precise map location of 222.244.64.125
223.175.200.215	Find precise map location of 223.175.200.215
30.232.91.136	Find precise map location of 30.232.91.136
10.95.130.154	Find precise map location of 10.95.130.154
41.188.108.162	Find precise map location of 41.188.108.162
49.116.119.100	Find precise map location of 49.116.119.100
165.220.126.18	Find precise map location of 165.220.126.18
30.173.224.73	Find precise map location of 30.173.224.73
54.200.111.63	Find precise map location of 54.200.111.63
119.126.73.56	Find precise map location of 119.126.73.56

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