Robtex

Up: 217.129.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 217.129.192.0/22
Down right: 217.129.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.129.192.9	PTR	sm-217-129-192-9.netvisao.pt
217.129.192.191	PTR	sm-217-129-192-191.netvisao.pt
217.129.192.247	PTR	sm-217-129-192-247.netvisao.pt
217.129.193.38	PTR	sm-217-129-193-38.netvisao.pt
217.129.193.153	PTR	sm-217-129-193-153.netvisao.pt
217.129.194.6	PTR	sm-217-129-194-6.netvisao.pt
217.129.194.39	PTR	sm-217-129-194-39.netvisao.pt
217.129.194.164	PTR	sm-217-129-194-164.netvisao.pt
217.129.194.206	PTR	sm-217-129-194-206.netvisao.pt
217.129.194.250	PTR	sm-217-129-194-250.netvisao.pt
217.129.195.183	PTR	sm-217-129-195-183.netvisao.pt
217.129.197.41	PTR	sm-217-129-197-41.netvisao.pt
217.129.197.41	A	exwin.info
217.129.197.210	PTR	sm-217-129-197-210.netvisao.pt
217.129.198.4	A	mail.bligz.com
217.129.198.4	A	oddsfetcher.com
217.129.198.4	A	mail.oddsfetcher.com
217.129.198.100	PTR	sm-217-129-198-100.netvisao.pt
217.129.198.193	PTR	sm-217-129-198-193.netvisao.pt
217.129.198.251	PTR	sm-217-129-198-251.netvisao.pt
217.129.199.39	PTR	sm-217-129-199-39.netvisao.pt
217.129.199.172	PTR	sm-217-129-199-172.netvisao.pt
217.129.199.233	PTR	sm-217-129-199-233.netvisao.pt