137.73.143 is a class C of IPs

Sample IPs from the class C 137.73.143

137.73.143.255	View precise location of 137.73.143.255 on the map!
137.73.143.241	View precise location of 137.73.143.241 on the map!
137.73.143.243	View precise location of 137.73.143.243 on the map!
137.73.143.107	View precise location of 137.73.143.107 on the map!
137.73.143.18	View precise location of 137.73.143.18 on the map!
137.73.143.70	View precise location of 137.73.143.70 on the map!
137.73.143.31	View precise location of 137.73.143.31 on the map!
137.73.143.231	View precise location of 137.73.143.231 on the map!
137.73.143.74	View precise location of 137.73.143.74 on the map!
137.73.143.83	View precise location of 137.73.143.83 on the map!
137.73.143.53	View precise location of 137.73.143.53 on the map!

10 Random IPs

53.110.229.47	Find precise map location of 53.110.229.47
230.96.196.211	Find precise map location of 230.96.196.211
45.178.164.16	Find precise map location of 45.178.164.16
140.31.222.115	Find precise map location of 140.31.222.115
243.4.71.6	Find precise map location of 243.4.71.6
119.75.253.215	Find precise map location of 119.75.253.215
11.185.47.194	Find precise map location of 11.185.47.194
107.109.183.89	Find precise map location of 107.109.183.89
144.105.71.232	Find precise map location of 144.105.71.232
79.68.92.41	Find precise map location of 79.68.92.41
78.155.89.154	Find precise map location of 78.155.89.154

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