Robtex

Up: 1.23.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 1.23.144.0/21
Down right: 1.23.152.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
1.23.144.41	PTR	in.iniconnection.com
1.23.144.42	PTR	mk.onlinemktservices.com
1.23.144.43	PTR	es.electronicmarservices.com
1.23.144.48	PTR	in.brandchannelservices.com
1.23.144.49	PTR	noidaprop.com
1.23.144.50	A+PTR	techmkt.co.in
1.23.144.51	A+PTR	quickservicespros.com
1.23.144.52	A	ns1.onlineservicespros.com
1.23.144.52	A	onlineservicespros.com
1.23.144.184	A	uppclamr.com
1.23.144.187	A	bsmartgis.com
1.23.144.187	A	gescomtrm.com
1.23.144.187	A	m1.onlinebcits.com
1.23.145.14	A	bgrhecpoll.ddns.net
1.23.145.244	A	mail.e-mudhra.com
1.23.146.67	A	paramounttpaapp.com
1.23.146.69	A	eximiusinfotech.com
1.23.146.75	A	medicusdevices.com
1.23.146.75	A	medicusservices.in
1.23.146.77	PTR	mail.paramounttpa.com
1.23.146.80	PTR	itweb.phmdomain.com
1.23.146.80	A	www.paramounttpa.com
1.23.146.80	A	www.ddssygoa.com
1.23.146.83	PTR	mail.paramounttpa.com
1.23.146.84	PTR	ituat.phmdomain.com
1.23.146.138	A	11plusexamsolutions.co.uk
1.23.152.113	A	hicosolutions.com