Robtex

Up: 193.149.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.149.240.0/23
Down right: 193.149.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.149.241.9	A+PTR	mx.out.partena.be
193.149.241.9	A	mail.partena.net
193.149.241.9	A	mx.netsalary.be
193.149.241.17	A	webmail.partena.be
193.149.241.66	A	parentia.be
193.149.241.68	A	mypartena-professional.be