Robtex

Up: 186.227.96.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 186.227.104.0/22
Down right: 186.227.108.0/22

IP	Type	Hostname
186.227.104.51	A	186-227-104-51.users.certto.com.br
186.227.104.70	A+PTR	186-227-104-70.users.certto.com.br
186.227.104.126	A+PTR	186-227-104-126.users.certto.com.br
186.227.104.130	A+PTR	186-227-104-130.users.certto.com.br
186.227.104.145	PTR	186-227-104-145.users.certto.com.br
186.227.104.161	A+PTR	186-227-104-161.users.certto.com.br
186.227.104.189	A+PTR	186-227-104-189.users.certto.com.br
186.227.104.237	A+PTR	186-227-104-237.users.certto.com.br
186.227.105.20	A+PTR	186-227-105-20.users.certto.com.br
186.227.105.40	A+PTR	186-227-105-40.users.certto.com.br
186.227.105.82	A+PTR	186-227-105-82.users.certto.com.br
186.227.105.133	A	186-227-105-133.users.certto.com.br
186.227.105.237	A+PTR	186-227-105-237.users.certto.com.br
186.227.105.248	A+PTR	186-227-105-248.users.certto.com.br
186.227.106.2	A+PTR	186-227-106-2.users.certto.com.br
186.227.106.3	A+PTR	186-227-106-3.users.certto.com.br
186.227.106.17	A+PTR	186-227-106-17.users.certto.com.br
186.227.106.150	A	186-227-106-150.users.certto.com.br
186.227.106.242	A+PTR	186-227-106-242.users.certto.com.br
186.227.107.243	A	186-227-107-243.users.certto.com.br
186.227.108.8	A+PTR	186-227-108-8.users.certto.com.br
186.227.108.44	A+PTR	186-227-108-44.users.certto.com.br
186.227.108.58	A+PTR	186-227-108-58.users.certto.com.br
186.227.108.69	A+PTR	186-227-108-69.users.certto.com.br
186.227.108.89	A+PTR	186-227-108-89.users.certto.com.br
186.227.108.96	A+PTR	186-227-108-96.users.certto.com.br
186.227.108.141	A+PTR	186-227-108-141.users.certto.com.br
186.227.108.145	A+PTR	186-227-108-145.users.certto.com.br
186.227.108.178	A+PTR	186-227-108-178.users.certto.com.br
186.227.108.215	A+PTR	186-227-108-215.users.certto.com.br
186.227.108.226	A+PTR	186-227-108-226.users.certto.com.br
186.227.108.230	A+PTR	186-227-108-230.users.certto.com.br
186.227.110.39	A+PTR	186-227-110-39.users.certto.com.br
186.227.110.44	A+PTR	186-227-110-44.users.certto.com.br
186.227.110.78	A+PTR	186-227-110-78.users.certto.com.br