18.91 is a class B of IPs

Sample IPs from the class B 18.91

18.91.19.89	View precise location of 18.91.19.89 on the map!
18.91.28.123	View precise location of 18.91.28.123 on the map!
18.91.1.195	View precise location of 18.91.1.195 on the map!
18.91.91.248	View precise location of 18.91.91.248 on the map!
18.91.244.101	View precise location of 18.91.244.101 on the map!
18.91.150.30	View precise location of 18.91.150.30 on the map!
18.91.237.232	View precise location of 18.91.237.232 on the map!
18.91.243.240	View precise location of 18.91.243.240 on the map!
18.91.51.9	View precise location of 18.91.51.9 on the map!
18.91.157.113	View precise location of 18.91.157.113 on the map!
18.91.140.188	View precise location of 18.91.140.188 on the map!

10 Random IPs

119.174.72.67	Find precise map location of 119.174.72.67
253.65.173.39	Find precise map location of 253.65.173.39
120.56.70.103	Find precise map location of 120.56.70.103
126.188.199.54	Find precise map location of 126.188.199.54
117.51.202.70	Find precise map location of 117.51.202.70
186.84.181.221	Find precise map location of 186.84.181.221
209.217.253.45	Find precise map location of 209.217.253.45
80.6.229.140	Find precise map location of 80.6.229.140
43.195.101.45	Find precise map location of 43.195.101.45
143.132.43.17	Find precise map location of 143.132.43.17
43.149.103.53	Find precise map location of 43.149.103.53

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