Robtex

Up: 66.18.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.18.136.0/22
Down right: 66.18.140.0/22

IP	Type	Hostname
66.18.136.105	A	mail.exp-signs.com
66.18.136.112	A	mail.gmsurveying.com
66.18.136.155	A	mail.tandtproperty.com
66.18.136.156	A	ont-static-66.18.136.156.mpowercom.net
66.18.136.156	A	yniguez.com
66.18.137.47	A	mail.affinityflavors.com
66.18.137.96	A+PTR	ont-static-66.18.137.96.mpowercom.net
66.18.137.96	A	zimbra.avidid.com
66.18.137.152	A	remote.seawestinc.com
66.18.137.244	A	californiamagdesians.com
66.18.137.244	A	californiamagdesian.com
66.18.138.184	A	ont-static-66.18.138.184.mpowercom.net
66.18.139.18	A	mail.catalinayachts.com
66.18.139.31	A	ont-static-66.18.139.31.mpowercom.net
66.18.139.60	A	ont-static-66.18.139.60.mpowercom.net
66.18.139.122	A+PTR	ont-static-66.18.139.122.mpowercom.net
66.18.139.154	PTR	ont-static-66.18.139.154.mpowercom.net
66.18.139.167	A	ont-static-66.18.139.167.mpowercom.net
66.18.140.3	PTR	lgb-static-66.18.140.3.mpowercom.net
66.18.140.80	PTR	lgb-static-66.18.140.80.mpowercom.net
66.18.140.84	A	mail.studiom.com
66.18.140.154	PTR	lgb-static-66.18.140.154.mpowercom.net
66.18.140.154	A	mx1.wmgoccmed.com
66.18.140.186	A	mail.casabanc.com
66.18.141.91	A+PTR	mail.elsentlaw.com
66.18.141.91	A	elsmail.elsentlaw.com
66.18.141.138	A	mail.roblesvideo.com
66.18.141.153	PTR	lgb-static-66.18.141.153.mpowercom.net
66.18.141.153	A	smtp.southbayequitylending.com
66.18.141.153	A	smtp.southbayequity.com
66.18.142.53	A	lgb-static-66.18.142.53.mpowercom.net
66.18.142.80	A+PTR	lgb-static-66.18.142.80.mpowercom.net
66.18.142.96	PTR	email.xcvi.com
66.18.143.32	PTR	lgb-static-66.18.143.32.mpowercom.net
66.18.143.32	A	a.mx.sumission.com
66.18.143.126	A	lgb-static-66.18.143.126.mpowercom.net
66.18.143.185	PTR	lgb-static-66.18.143.185.mpowercom.net
66.18.143.185	A	mail.howbaredoyoudare.com
66.18.143.192	PTR	lgb-static-66.18.143.192.mpowercom.net
66.18.143.234	A	gravelcrew.com