Robtex

Up: 149.18.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 149.18.0.0/23
Down right: 149.18.2.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
149.18.0.27	A+PTR	mail.snell-david.co.uk
149.18.0.230	PTR	149.18.0.230.bcube.co.uk
149.18.1.1	PTR	149.18.1.1.bcube.co.uk
149.18.1.142	A	mail.mohacom.com
149.18.1.142	A	nsmail.mohacom.com
149.18.2.2	PTR	149.18.2.2.bcube.co.uk
149.18.2.8	PTR	149.18.2.8.bcube.co.uk
149.18.2.243	A+PTR	mx.gosztonyi.com
149.18.2.243	A	*.gosztonyi.com
149.18.2.243	A	hostmaster.gosztonyi.com
149.18.3.2	PTR	149.18.3.2.bcube.co.uk
149.18.3.73	A+PTR	pamailserver.phoebusassociates.com
149.18.3.73	A	mail.phoebusassociates.com