Robtex

Up: 170.28.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 170.28.128.0/22
Down right: 170.28.132.0/22

IP	Type	Hostname
170.28.128.9	A+PTR	mail1.nyct.com
170.28.128.18	A+PTR	mail4.nyct.com
170.28.128.25	A	myaccess.nyct.com
170.28.128.44	A	webmail.nyct.com
170.28.128.46	PTR	outmail.nyct.com
170.28.128.57	A	secure-dobic.nyct.com
170.28.128.86	A	mail3.nymta.info
170.28.128.87	A	mail4.nymta.info
170.28.128.92	A	hroutcall.nyct.com
170.28.128.100	A	www.mtamail.org
170.28.128.132	A	advisory.mtanyct.info
170.28.128.133	A+PTR	mail.mtanyct.info
170.28.128.134	A+PTR	mail2.mtanyct.info
170.28.128.135	PTR	onthego.mta.info
170.28.128.135	A	tripplanner.mta.info
170.28.128.136	A	retiree.nyct.com
170.28.128.138	A	efixmetrocard.mtanyct.info
170.28.128.141	A+PTR	citrix.libus.org
170.28.128.161	A	aartrip.mtanyct.info