Robtex

Up: 128.0.42.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 128.0.42.0/25
Down right: 128.0.42.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
128.0.42.5	PTR	client-5.ymens.com
128.0.42.32	PTR	client-32.ymens.com
128.0.42.34	A	app.ymens.com
128.0.42.35	A+PTR	staging.ymens.com
128.0.42.37	A+PTR	ns3.ymens.com
128.0.42.38	A+PTR	ns4.ymens.com
128.0.42.43	PTR	client-43.ymens.com
128.0.42.43	A	app.bringmore.ro
128.0.42.43	A	dns1.teamnet-international.ro
128.0.42.45	PTR	client-45.ymens.com
128.0.42.45	A	ymens.eu
128.0.42.45	A	ymens.ro
128.0.42.56	PTR	client-56.ymens.com
128.0.42.60	PTR	fml.platformacloud.ro
128.0.42.60	A	mx2.platformacloud.ro
128.0.42.65	PTR	client-65.ymens.com
128.0.42.65	A	mail.clubwhirlpool.ro
128.0.42.68	PTR	client-68.ymens.com
128.0.42.68	A	mx.guvcloud.ro
128.0.42.68	A	guvcloud.ro
128.0.42.78	A+PTR	ns2.ymens.com
128.0.42.78	A	ns2.ymens.net
128.0.42.80	PTR	client-80.ymens.com
128.0.42.92	A+PTR	mail.platformacloud.ro
128.0.42.92	A	mail.wavedivision.ro
128.0.42.92	A	mail.conceptconsulting.eu
128.0.42.95	A+PTR	mx.platformacloud.ro
128.0.42.95	A	fml.platformacloud.ro
128.0.42.99	PTR	client-99.ymens.com
128.0.42.103	PTR	client-103.ymens.com
128.0.42.108	PTR	client-108.ymens.com
128.0.42.128	PTR	client-128.ymens.com
128.0.42.133	PTR	client-133.ymens.com
128.0.42.135	PTR	client-135.ymens.com
128.0.42.136	PTR	client-136.ymens.com
128.0.42.148	A	mail.opengov.ro
128.0.42.150	A+PTR	mx3.teamnet-international.ro
128.0.42.151	PTR	client-151.ymens.com
128.0.42.167	PTR	client-167.ymens.com
128.0.42.173	PTR	client-173.ymens.com
128.0.42.178	PTR	client-178.ymens.com
128.0.42.194	PTR	client-194.ymens.com
128.0.42.228	PTR	client-228.ymens.com
128.0.42.242	PTR	client-242.ymens.com
128.0.42.250	PTR	client-250.ymens.com