Robtex

Up: 194.88.232.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 194.88.233.0/25
Down right: 194.88.233.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.88.233.2	A+PTR	dns.opalen.com
194.88.233.3	PTR	mail.opalen.com
194.88.233.8	A+PTR	dns2.opalen.com
194.88.233.16	PTR	www.opalen.com
194.88.233.20	PTR	www.opalen.com
194.88.233.20	A	mail.activasystem.se
194.88.233.20	A	hygienteknik.org
194.88.233.35	PTR	www.opalen.com
194.88.233.35	A	opalen.net
194.88.233.35	A	takac.com
194.88.233.40	PTR	www.opalen.com
194.88.233.71	PTR	www.opalen.com
194.88.233.80	PTR	www.opalen.com
194.88.233.80	A	mail.radiofysik.se
194.88.233.80	A	mail.lekohoj.se
194.88.233.81	A	mail.kryssmail.se
194.88.233.114	PTR	www.opalen.com
194.88.233.187	PTR	www.opalen.com
194.88.233.187	A	ancien-eveche-isere.fr
194.88.233.187	A	*.chattare.info
194.88.233.189	PTR	www.opalen.com
194.88.233.189	A	www.excel-guiden.se
194.88.233.189	A	slaktforskning.info
194.88.233.191	PTR	www.opalen.com
194.88.233.199	A	klimatdata.net