Robtex

Up: 94.46.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 94.46.16.0/23
Down right: 94.46.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
94.46.16.1	A+PTR	cp1.servidoreshosting.es
94.46.16.1	A	cognoscitiva.pt
94.46.16.1	A	www.121pr.com
94.46.16.100	PTR	filter9.cleanmx.pt
94.46.16.100	A	smtp.cleanmx.pt
94.46.16.220	A+PTR	filter6.cleanmx.pt
94.46.16.220	A	smtp.cleanmx.pt
94.46.16.220	A	mx1.cleanmx.es
94.46.16.221	A	mx2.mymailbox.cloud
94.46.16.222	PTR	filter6-out2.cleanmx.pt
94.46.16.225	A+PTR	filter6-out5.cleanmx.pt
94.46.16.230	PTR	cdp1.servidoreshosting.es
94.46.16.231	A+PTR	filter5-out5.cleanmx.pt
94.46.16.232	A+PTR	filter5-out6.cleanmx.pt
94.46.16.235	A+PTR	filter5.cleanmx.pt
94.46.16.235	A	smtp.cleanmx.pt
94.46.16.235	A	mx1.cleanmx.es
94.46.16.236	A+PTR	filter5-out1.cleanmx.pt
94.46.16.236	A	mx2.mymailbox.cloud
94.46.16.236	A	mx2.cleanmx.es
94.46.17.2	A	silverost.net