Robtex

Up: 123.243.112.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.112.0/23
Down right: 123.243.114.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.112.3	A+PTR	123-243-112-3.static.tpgi.com.au
123.243.112.12	A+PTR	123-243-112-12.static.tpgi.com.au
123.243.112.22	A+PTR	123-243-112-22.static.tpgi.com.au
123.243.112.30	A+PTR	123-243-112-30.static.tpgi.com.au
123.243.112.37	A+PTR	123-243-112-37.static.tpgi.com.au
123.243.112.52	A+PTR	123-243-112-52.static.tpgi.com.au
123.243.112.54	A+PTR	123-243-112-54.static.tpgi.com.au
123.243.112.74	A+PTR	123-243-112-74.static.tpgi.com.au
123.243.112.76	A+PTR	123-243-112-76.static.tpgi.com.au
123.243.112.79	A+PTR	123-243-112-79.static.tpgi.com.au
123.243.112.84	A+PTR	123-243-112-84.static.tpgi.com.au
123.243.112.96	A+PTR	123-243-112-96.static.tpgi.com.au
123.243.112.100	A	123-243-112-100.static.tpgi.com.au
123.243.112.111	A+PTR	123-243-112-111.static.tpgi.com.au
123.243.112.116	A+PTR	123-243-112-116.static.tpgi.com.au
123.243.112.132	A+PTR	123-243-112-132.static.tpgi.com.au
123.243.112.140	A+PTR	123-243-112-140.static.tpgi.com.au
123.243.112.158	A+PTR	123-243-112-158.static.tpgi.com.au
123.243.112.171	A	mail.questedu.com.au
123.243.112.171	A	questedu.com.au
123.243.112.177	A+PTR	123-243-112-177.static.tpgi.com.au
123.243.112.180	A+PTR	123-243-112-180.static.tpgi.com.au
123.243.112.204	A+PTR	123-243-112-204.static.tpgi.com.au
123.243.112.247	A+PTR	123-243-112-247.static.tpgi.com.au
123.243.112.249	A+PTR	123-243-112-249.static.tpgi.com.au
123.243.112.252	A+PTR	123-243-112-252.static.tpgi.com.au
123.243.113.2	A+PTR	123-243-113-2.static.tpgi.com.au
123.243.113.12	PTR	123-243-113-12.static.tpgi.com.au
123.243.113.22	A+PTR	123-243-113-22.static.tpgi.com.au
123.243.113.42	A	rudhra.biz
123.243.113.42	A	rudhra.us
123.243.113.50	A+PTR	123-243-113-50.static.tpgi.com.au
123.243.113.66	A+PTR	123-243-113-66.static.tpgi.com.au
123.243.113.70	A+PTR	123-243-113-70.static.tpgi.com.au
123.243.113.78	A+PTR	123-243-113-78.static.tpgi.com.au
123.243.113.99	A	digitalserver.info
123.243.113.112	A+PTR	123-243-113-112.static.tpgi.com.au
123.243.113.115	A	123-243-113-115.static.tpgi.com.au
123.243.113.123	A	dandenong.searinsure.com.au
123.243.113.126	A+PTR	123-243-113-126.static.tpgi.com.au
123.243.113.133	A+PTR	123-243-113-133.static.tpgi.com.au
123.243.113.155	A+PTR	123-243-113-155.static.tpgi.com.au
123.243.113.162	A+PTR	123-243-113-162.static.tpgi.com.au
123.243.113.173	A+PTR	123-243-113-173.static.tpgi.com.au
123.243.113.176	PTR	123-243-113-176.static.tpgi.com.au
123.243.113.182	PTR	123-243-113-182.static.tpgi.com.au
123.243.113.185	A+PTR	123-243-113-185.static.tpgi.com.au
123.243.113.224	A+PTR	123-243-113-224.static.tpgi.com.au
123.243.113.229	A+PTR	123-243-113-229.static.tpgi.com.au
123.243.113.247	A	123-243-113-247.static.tpgi.com.au
123.243.114.19	A+PTR	123-243-114-19.static.tpgi.com.au
123.243.114.24	A+PTR	123-243-114-24.static.tpgi.com.au
123.243.114.37	A+PTR	123-243-114-37.static.tpgi.com.au
123.243.114.46	A+PTR	123-243-114-46.static.tpgi.com.au
123.243.114.48	A+PTR	123-243-114-48.static.tpgi.com.au
123.243.114.64	A+PTR	123-243-114-64.static.tpgi.com.au
123.243.114.73	A+PTR	123-243-114-73.static.tpgi.com.au
123.243.114.74	A+PTR	123-243-114-74.static.tpgi.com.au
123.243.114.83	PTR	123-243-114-83.static.tpgi.com.au
123.243.114.83	A	didg.com
123.243.114.87	A+PTR	123-243-114-87.static.tpgi.com.au
123.243.114.104	A+PTR	123-243-114-104.static.tpgi.com.au
123.243.114.106	A+PTR	123-243-114-106.static.tpgi.com.au
123.243.114.110	PTR	123-243-114-110.static.tpgi.com.au
123.243.114.110	A	mail.uscwap.com
123.243.114.110	A	uscwap.com
123.243.114.132	A+PTR	123-243-114-132.static.tpgi.com.au
123.243.114.136	A+PTR	123-243-114-136.static.tpgi.com.au
123.243.114.138	A+PTR	123-243-114-138.static.tpgi.com.au
123.243.114.158	A	smtp.humanwerewolfsyndrome.com
123.243.114.158	A	smtp.pandorathecat.net
123.243.114.158	A	gilberttragoza.com
123.243.114.176	A+PTR	123-243-114-176.static.tpgi.com.au
123.243.114.199	A	mail.cpkpartners.com
123.243.114.199	A	ns1.rebootsystems.net
123.243.114.199	A	mail.rebootingitconsultants.com
123.243.114.221	A+PTR	123-243-114-221.static.tpgi.com.au
123.243.114.227	A+PTR	123-243-114-227.static.tpgi.com.au
123.243.114.232	A+PTR	123-243-114-232.static.tpgi.com.au
123.243.114.249	A+PTR	123-243-114-249.static.tpgi.com.au
123.243.114.251	A+PTR	123-243-114-251.static.tpgi.com.au
123.243.115.13	PTR	123-243-115-13.static.tpgi.com.au
123.243.115.46	A+PTR	123-243-115-46.static.tpgi.com.au
123.243.115.50	PTR	123-243-115-50.static.tpgi.com.au
123.243.115.50	A	mail.valtrading.co
123.243.115.50	A	smtp.valtrading.co
123.243.115.52	A+PTR	123-243-115-52.static.tpgi.com.au
123.243.115.107	A	nixchannel.com
123.243.115.109	A+PTR	123-243-115-109.static.tpgi.com.au
123.243.115.124	A+PTR	123-243-115-124.static.tpgi.com.au
123.243.115.135	A+PTR	123-243-115-135.static.tpgi.com.au
123.243.115.156	A+PTR	123-243-115-156.static.tpgi.com.au
123.243.115.160	A+PTR	123-243-115-160.static.tpgi.com.au
123.243.115.168	A+PTR	123-243-115-168.static.tpgi.com.au
123.243.115.217	A+PTR	123-243-115-217.static.tpgi.com.au
123.243.115.234	A	123-243-115-234.static.tpgi.com.au
123.243.115.235	A	mail.cgkonline.com
123.243.115.255	A+PTR	123-243-115-255.static.tpgi.com.au