Robtex

Up: 115.30.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 115.30.48.0/21
Down right: 115.30.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
115.30.48.0	PTR	115-30-48-0.users.engin.com.au
115.30.48.0	A	0.48.30.115.sta.engin.com.au
115.30.48.8	A	8.48.30.115.sta.engin.com.au
115.30.48.20	A	20.48.30.115.sta.engin.com.au
115.30.48.57	A	57.48.30.115.sta.engin.com.au
115.30.48.91	A	91.48.30.115.sta.engin.com.au
115.30.48.112	A+PTR	112.48.30.115.sta.engin.com.au
115.30.48.118	A	118.48.30.115.sta.engin.com.au
115.30.48.147	PTR	115-30-48-147.sta.engin.com.au
115.30.48.147	A	147.48.30.115.sta.engin.com.au
115.30.48.207	A	mail.peopleconnexion.com
115.30.48.207	A	m1.pxrecruitment.com
115.30.48.207	A	mail.pxrecruitment.com
115.30.48.242	A+PTR	242.48.30.115.sta.engin.com.au
115.30.48.254	A	254.48.30.115.sta.engin.com.au
115.30.49.0	PTR	115-30-49-0.users.engin.com.au
115.30.49.122	A	onemanagementsystem.com
115.30.49.122	A	gottagripe.com.au
115.30.49.122	A	croccraft.com
115.30.49.173	A	ns4.pbaintegration.net.au
115.30.49.173	A	115-30-49-173.users.engin.com.au
115.30.49.173	A	titan1.pbaintegration.net.au
115.30.50.0	PTR	115-30-50-0.users.engin.com.au
115.30.50.0	A	0.50.30.115.sta.engin.com.au
115.30.51.0	PTR	115-30-51-0.users.engin.com.au
115.30.51.0	A	0.51.30.115.sta.engin.com.au
115.30.51.105	A	mx.imconsulting.com.au
115.30.52.0	PTR	115-30-52-0.users.engin.com.au
115.30.52.0	A	0.52.30.115.sta.engin.com.au
115.30.53.0	PTR	115-30-53-0.users.engin.com.au
115.30.54.0	PTR	115-30-54-0.users.engin.com.au
115.30.54.0	A	0.54.30.115.sta.engin.com.au
115.30.55.0	PTR	115-30-55-0.users.engin.com.au
115.30.55.0	A	0.55.30.115.sta.engin.com.au
115.30.55.3	A	stewartcelani.com
115.30.55.47	A	mx.holidayonanybudget.com
115.30.55.47	A	mail.sacredtraveller.com
115.30.55.47	A	mx.spiers.net.au
115.30.55.66	PTR	115-30-55-66.users.engin.com.au
115.30.55.93	A	115-30-55-93.users.engin.com.au
115.30.55.167	A	115-30-55-167.users.engin.com.au
115.30.56.0	PTR	115-30-56-0.sta.engin.com.au
115.30.56.0	A	0.56.30.115.sta.engin.com.au
115.30.57.0	PTR	115-30-57-0.users.engin.com.au
115.30.57.0	A	0.57.30.115.sta.engin.com.au
115.30.57.83	PTR	83.57.30.115.sta.engin.com.au
115.30.57.107	A	115-30-57-107.users.engin.com.au
115.30.57.236	A	mail.twelvebottles.com.au
115.30.57.239	A	115-30-57-239.users.engin.com.au
115.30.59.0	PTR	115-30-59-0.users.engin.com.au
115.30.59.0	A	0.59.30.115.sta.engin.com.au
115.30.59.43	A	43.59.30.115.sta.engin.com.au
115.30.59.110	A	mail3.hhco.co
115.30.59.110	A	mail3.hhco.biz
115.30.60.0	PTR	115-30-60-0.users.engin.com.au
115.30.60.0	A	0.60.30.115.sta.engin.com.au
115.30.61.0	PTR	115-30-61-0.users.engin.com.au
115.30.61.0	A	0.61.30.115.sta.engin.com.au
115.30.62.0	PTR	115-30-62-0.users.engin.com.au
115.30.62.0	A	0.62.30.115.sta.engin.com.au
115.30.62.51	A+PTR	51.62.30.115.sta.engin.com.au
115.30.62.59	A	59.62.30.115.sta.engin.com.au
115.30.63.0	PTR	115-30-63-0.users.engin.com.au
115.30.63.0	A	0.63.30.115.sta.engin.com.au