13.21.88 is a class C of IPs

Sample IPs from the class C 13.21.88

13.21.88.60	View precise location of 13.21.88.60 on the map!
13.21.88.248	View precise location of 13.21.88.248 on the map!
13.21.88.172	View precise location of 13.21.88.172 on the map!
13.21.88.139	View precise location of 13.21.88.139 on the map!
13.21.88.135	View precise location of 13.21.88.135 on the map!
13.21.88.230	View precise location of 13.21.88.230 on the map!
13.21.88.32	View precise location of 13.21.88.32 on the map!
13.21.88.144	View precise location of 13.21.88.144 on the map!
13.21.88.105	View precise location of 13.21.88.105 on the map!
13.21.88.49	View precise location of 13.21.88.49 on the map!
13.21.88.227	View precise location of 13.21.88.227 on the map!

10 Random IPs

3.180.99.121	Find precise map location of 3.180.99.121
28.89.231.27	Find precise map location of 28.89.231.27
131.230.45.198	Find precise map location of 131.230.45.198
6.32.138.38	Find precise map location of 6.32.138.38
221.230.144.7	Find precise map location of 221.230.144.7
126.110.149.110	Find precise map location of 126.110.149.110
29.50.66.158	Find precise map location of 29.50.66.158
87.190.240.3	Find precise map location of 87.190.240.3
131.144.22.76	Find precise map location of 131.144.22.76
55.218.251.217	Find precise map location of 55.218.251.217
158.112.150.51	Find precise map location of 158.112.150.51

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