23.185.0.4

• RIPE4 4.0.185.23.in-addr.arpa
• Records pointing here:
• Awww.transfers.ucla.edu
• Awww.swd.ucla.edu
• Atest.cms1.asa.uw.edu
• Avoyages.ecu.edu
• Awww.umbc.edu expired since 5 hours, 27 minutes
• Awww.hpl.ca expired since 18 hours, 2 minutes
• Aets.ucsb.edu expired since 1 day, 3 hours
• Awww.providence.edu expired since 1 day, 4 hours
• Awww.sfport.com expired since 1 day, 6 hours
• Aearthjustice.org expired since 1 day, 8 hours
• Awww.ul.com expired since 1 day, 21 hours
• Ashawnee.edu expired since 2 days, 5 hours
• Ainterfax.net expired since 2 days, 12 hours
• Awsb.wharton.upenn.edu expired since 2 days, 23 hours
• Awww.carrollcc.edu expired since 3 days, 4 hours
• Aism.yale.edu expired since 3 days, 1 hour

This top-level domain has no publically available whois server. Try going to www.nic.arpa.