Robtex

Up: 103.23.16.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 103.23.17.0/25
Down right: 103.23.17.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.23.17.2	PTR	gw2-ak030-rt1.citylink.co.nz
103.23.17.4	A	nzsmtp.practiv.com
103.23.17.4	A	smtp.practiv.com
103.23.17.4	A	mail.practiv.com
103.23.17.5	PTR	cameron-partners.citylink.co.nz
103.23.17.5	A	akmaildel.cam.co.nz
103.23.17.8	PTR	mega.citylink.co.nz
103.23.17.19	A	devemail.mailprimer.com
103.23.17.27	A	mail.olympic.org.nz
103.23.17.38	PTR	pengellys.co.nz
103.23.17.38	A	www.merz.co.nz
103.23.17.38	A	stylenz.co.nz
103.23.17.41	PTR	103-23-17-41.citylink.co.nz
103.23.17.41	A	www.gladeye.org
103.23.17.41	A	gladeye.org
103.23.17.139	A+PTR	ns3.ipayroll.co.nz
103.23.17.146	A	mail.theoptimacorporation.com
103.23.17.193	PTR	103-23-17-193.citylink.co.nz
103.23.17.208	A	www.socrates.net.nz
103.23.17.211	A	socratestest.net.nz
103.23.17.252	PTR	103-23-17-252.citylink.co.nz