Robtex

Up: 193.239.0.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 193.239.2.0/24
Down right: 193.239.3.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.239.2.2	A	abyss.alefnula.cz
193.239.2.3	A+PTR	mail1.alef.com
193.239.2.3	A	mail1.alefnula.com
193.239.2.3	A	mail1.alefnula.cz
193.239.2.4	A+PTR	alef.alefnula.cz
193.239.2.4	A	www.alef0.sk
193.239.2.4	A	alefgroup.net
193.239.2.8	A+PTR	ns1.alef.com
193.239.2.9	A+PTR	web001.alef.com
193.239.2.9	A	alefgroup.net
193.239.2.9	A	alefnula.ro
193.239.2.11	A+PTR	mail2.alef.com
193.239.2.11	A	mail2.alefnula.com
193.239.2.11	A	mail2.alefnula.cz
193.239.2.13	PTR	13.2.239.193.static.alefnula.com
193.239.2.20	A+PTR	massmail1.alefnula.cz
193.239.2.20	A	massmail1.alefnula.com
193.239.2.21	A+PTR	massmail2.alefnula.cz
193.239.2.21	A	massmail2.alefnula.com
193.239.2.35	PTR	35.2.239.193.static.alefnula.com
193.239.2.35	A	alef.alef0.cz
193.239.2.35	A	alefd.cz
193.239.2.36	PTR	36.2.239.193.static.alefnula.com
193.239.2.36	A	share.alef.com
193.239.2.44	PTR	ocsrp.alefnula.com
193.239.2.44	A	aleftraining.net
193.239.2.44	A	aleftraining.eu
193.239.2.54	PTR	54.2.239.193.static.alefnula.com
193.239.2.99	A+PTR	mail3.alef.com
193.239.2.99	A	mail3.alefnula.com
193.239.2.102	PTR	102.2.239.193.static.alefnula.com
193.239.2.102	A	massmail3.alefnula.com
193.239.2.125	PTR	125.2.239.193.static.alefnula.com