Robtex

Up: 193.193.160.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.193.161.0/25
Down right: 193.193.161.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.193.161.7	A+PTR	ns1.udocx.com
193.193.161.7	A	ns1.fenestrae.com
193.193.161.7	A	ns2.fenestrae.com
193.193.161.8	A+PTR	ns2.udocx.com
193.193.161.8	A	ns2.officefax.net
193.193.161.11	A	faxination.net
193.193.161.11	A	fenestrae.nl
193.193.161.11	A	fenestrae.mobi
193.193.161.40	A	mailer.udocx.com
193.193.161.57	A	myudocx.com
193.193.161.58	PTR	www.udocx.com
193.193.161.58	A	udocs.de
193.193.161.90	PTR	www.udocx.com
193.193.161.90	A	udocs.eu
193.193.161.93	A	faxination.net
193.193.161.93	A	officefax.net
193.193.161.93	A	onudocx.com
193.193.161.202	PTR	mail.officefax.net
193.193.161.203	PTR	mail.officefax.net
193.193.161.204	PTR	mail.officefax.net
193.193.161.210	A+PTR	mail.officefax.net