Robtex

Up: 170.28.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 170.28.128.0/21
Down right: 170.28.136.0/21

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
170.28.128.161	A	aartrip.mtanyct.info
170.28.136.9	A+PTR	mail2.nyct.com
170.28.136.11	A+PTR	mail3.nyct.com
170.28.136.21	A	tripplanner.mta.info
170.28.136.21	A	travel.mtanyct.info
170.28.136.21	A	onthego.mta.info
170.28.136.22	A	advisory.mtanyct.info
170.28.136.22	A	transittrax.mta.info
170.28.136.57	A	www.mtacc.info
170.28.136.60	A	mydesktop.gslbext.lirr.org
170.28.136.70	A	myaccessns.nymta.info
170.28.136.71	A	securedesktop.gslbext.nyct.com
170.28.136.71	A	securedesktop.nyct.com
170.28.136.86	A	mail1.nymta.info
170.28.136.87	A	mail2.nymta.info
170.28.136.100	A	www.mtamail.org
170.28.136.100	A	mtamail.org
170.28.136.136	A	proddmzedu-adept.nyct.com
170.28.142.2	PTR	webvpn.mtabt.net
170.28.142.18	A	ucma.mtabsc.info
170.28.142.18	A	ucm.mtabsc.info
170.28.142.29	A	hcma.mymta.info
170.28.142.29	A	hcm.mymta.info
170.28.142.50	A	wwwa.mymta.info
170.28.142.50	A	www.mymta.info
170.28.142.50	A	wwwa.mtabsc.info
170.28.142.135	A	smtp.mtabt.net
170.28.142.136	PTR	webpay.mtabt.net
170.28.142.137	A+PTR	travel.mtabt.net
170.28.142.137	A	traveltime.mta.info
170.28.142.199	PTR	appdef.mtabt.net
170.28.143.2	A	webvpn.mtabt.net