Robtex

Up: 109.51.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 109.51.128.0/18
Down right: 109.51.192.0/18

IP	Type	Hostname
109.51.129.66	A	a109-51-129-66.cpe.netcabo.pt
109.51.138.80	A	smtp.oguerreiro.com
109.51.138.80	A	a109-51-138-80.cpe.netcabo.pt
109.51.150.160	A	a109-51-150-160.cpe.netcabo.pt
109.51.153.29	A	a109-51-153-29.cpe.netcabo.pt
109.51.153.178	A	a109-51-153-178.cpe.netcabo.pt
109.51.159.5	A	a109-51-159-5.cpe.netcabo.pt
109.51.163.62	A	a109-51-163-62.cpe.netcabo.pt
109.51.165.32	A	a109-51-165-32.cpe.netcabo.pt
109.51.165.221	A	a109-51-165-221.cpe.netcabo.pt
109.51.166.114	A	twawki.org
109.51.168.119	A	rrcentralinas.com
109.51.168.119	A	mail.rrcentralinas.com
109.51.171.149	A	a109-51-171-149.cpe.netcabo.pt
109.51.172.153	A	a109-51-172-153.cpe.netcabo.pt
109.51.178.235	A	webmail.oguerreiro.com
109.51.182.189	A	a109-51-182-189.cpe.netcabo.pt
109.51.183.229	A	nasoftpt.ddns.net
109.51.188.198	A	netsecpt.com
109.51.199.154	A	a109-51-199-154.cpe.netcabo.pt
109.51.204.175	A	exchange.bomsucesso.net
109.51.204.175	A	acordoobd.dyndns.org
109.51.205.206	A	a109-51-205-206.cpe.netcabo.pt
109.51.208.181	A	a109-51-208-181.cpe.netcabo.pt
109.51.210.240	A	a109-51-210-240.cpe.netcabo.pt
109.51.216.48	A	a109-51-216-48.cpe.netcabo.pt
109.51.216.174	A	a109-51-216-174.cpe.netcabo.pt
109.51.216.208	A	a109-51-216-208.cpe.netcabo.pt
109.51.224.1	A	a109-51-224-1.cpe.netcabo.pt
109.51.226.1	A	a109-51-226-1.cpe.netcabo.pt
109.51.229.51	A	remote.drsis.pt
109.51.239.213	A	a109-51-239-213.cpe.netcabo.pt
109.51.242.103	A	ptbasso.com
109.51.243.98	A	bs.bomsucesso.net
109.51.250.110	A	mail.twawki.org