231.21.27 is a class C of IPs

Sample IPs from the class C 231.21.27

231.21.27.155	View precise location of 231.21.27.155 on the map!
231.21.27.178	View precise location of 231.21.27.178 on the map!
231.21.27.246	View precise location of 231.21.27.246 on the map!
231.21.27.237	View precise location of 231.21.27.237 on the map!
231.21.27.243	View precise location of 231.21.27.243 on the map!
231.21.27.218	View precise location of 231.21.27.218 on the map!
231.21.27.183	View precise location of 231.21.27.183 on the map!
231.21.27.16	View precise location of 231.21.27.16 on the map!
231.21.27.191	View precise location of 231.21.27.191 on the map!
231.21.27.115	View precise location of 231.21.27.115 on the map!
231.21.27.82	View precise location of 231.21.27.82 on the map!

10 Random IPs

255.71.117.142	Find precise map location of 255.71.117.142
62.209.146.29	Find precise map location of 62.209.146.29
10.162.215.60	Find precise map location of 10.162.215.60
214.156.112.3	Find precise map location of 214.156.112.3
226.185.234.239	Find precise map location of 226.185.234.239
214.120.187.91	Find precise map location of 214.120.187.91
234.113.198.161	Find precise map location of 234.113.198.161
58.229.26.208	Find precise map location of 58.229.26.208
252.36.143.78	Find precise map location of 252.36.143.78
207.217.129.20	Find precise map location of 207.217.129.20
121.1.158.168	Find precise map location of 121.1.158.168

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