121.57.48 is a class C of IPs

Sample IPs from the class C 121.57.48

121.57.48.179	View precise location of 121.57.48.179 on the map!
121.57.48.92	View precise location of 121.57.48.92 on the map!
121.57.48.103	View precise location of 121.57.48.103 on the map!
121.57.48.104	View precise location of 121.57.48.104 on the map!
121.57.48.34	View precise location of 121.57.48.34 on the map!
121.57.48.210	View precise location of 121.57.48.210 on the map!
121.57.48.40	View precise location of 121.57.48.40 on the map!
121.57.48.253	View precise location of 121.57.48.253 on the map!
121.57.48.79	View precise location of 121.57.48.79 on the map!
121.57.48.58	View precise location of 121.57.48.58 on the map!
121.57.48.82	View precise location of 121.57.48.82 on the map!

10 Random IPs

244.3.59.176	Find precise map location of 244.3.59.176
51.112.134.58	Find precise map location of 51.112.134.58
206.89.187.31	Find precise map location of 206.89.187.31
75.191.4.145	Find precise map location of 75.191.4.145
241.62.124.158	Find precise map location of 241.62.124.158
20.253.228.139	Find precise map location of 20.253.228.139
148.91.209.142	Find precise map location of 148.91.209.142
21.111.202.118	Find precise map location of 21.111.202.118
182.158.93.230	Find precise map location of 182.158.93.230
92.194.222.60	Find precise map location of 92.194.222.60
134.40.34.127	Find precise map location of 134.40.34.127

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